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2106975243 = 31766939749
BaseRepresentation
bin111110110010101…
…1110010000001011
312102211122102200010
41331211132100023
513303341201433
6545023443003
7103132664652
oct17545362013
95384572603
102106975243
1199137275a
124a9756463
13277690a19
1415db84199
15c4e93e63
hex7d95e40b

2106975243 has 8 divisors (see below), whose sum is σ = 2809530000. Its totient is φ = 1404535328.

The previous prime is 2106975163. The next prime is 2106975263. The reversal of 2106975243 is 3425796012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2106975243 - 214 = 2106958859 is a prime.

It is a super-2 number, since 2×21069752432 = 8878689349229818098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2106975263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33133 + ... + 72881.

It is an arithmetic number, because the mean of its divisors is an integer number (351191250).

Almost surely, 22106975243 is an apocalyptic number.

2106975243 is a deficient number, since it is larger than the sum of its proper divisors (702554757).

2106975243 is a wasteful number, since it uses less digits than its factorization.

2106975243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57421.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2106975243 is about 45901.7999973857. The cubic root of 2106975243 is about 1281.9954315483.

The spelling of 2106975243 in words is "two billion, one hundred six million, nine hundred seventy-five thousand, two hundred forty-three".

Divisors: 1 3 17669 39749 53007 119247 702325081 2106975243