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6900345149 = 3143101107479
BaseRepresentation
bin1100110110100101…
…01110100100111101
3122210220012212000212
412123102232210331
5103112442021044
63100414202205
7332665652225
oct63322564475
918726185025
106900345149
112a21079495
121406ab3365
1385c783589
14496619085
152a5bd1a9e
hex19b4ae93d

6900345149 has 32 divisors (see below), whose sum is σ = 7445053440. Its totient is φ = 6384168000.

The previous prime is 6900345119. The next prime is 6900345167. The reversal of 6900345149 is 9415430096.

It is a cyclic number.

It is not a de Polignac number, because 6900345149 - 212 = 6900341053 is a prime.

It is a super-2 number, since 2×69003451492 = 95229526350655664402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6900345119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14405492 + ... + 14405970.

It is an arithmetic number, because the mean of its divisors is an integer number (232657920).

Almost surely, 26900345149 is an apocalyptic number.

It is an amenable number.

6900345149 is a deficient number, since it is larger than the sum of its proper divisors (544708291).

6900345149 is a wasteful number, since it uses less digits than its factorization.

6900345149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 6900345149 is about 83068.3161560411. The cubic root of 6900345149 is about 1903.8100047753.

The spelling of 6900345149 in words is "six billion, nine hundred million, three hundred forty-five thousand, one hundred forty-nine".

Divisors: 1 31 43 101 107 479 1333 3131 3317 4343 4601 10807 14849 20597 48379 51253 134633 142631 335017 464701 638507 1499749 1588843 2080297 2203879 5176553 14405731 64489207 68320249 160473143 222591779 6900345149