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3145530769 = 191011639151
BaseRepresentation
bin1011101101111100…
…1111110110010001
322010012212112000121
42323133033312101
522420223441034
61240043350241
7140643366433
oct27337176621
98105775017
103145530769
11137462a907
12739522381
133b18aa114
1421ba8a653
1513623e1b4
hexbb7cfd91

3145530769 has 8 divisors (see below), whose sum is σ = 3343870080. Its totient is φ = 2950470000.

The previous prime is 3145530767. The next prime is 3145530809. The reversal of 3145530769 is 9670355413.

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 3145530769 - 21 = 3145530767 is a prime.

It is a super-2 number, since 2×31455307692 = 19788727637451462722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3145530767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817657 + ... + 821494.

It is an arithmetic number, because the mean of its divisors is an integer number (417983760).

Almost surely, 23145530769 is an apocalyptic number.

It is an amenable number.

3145530769 is a deficient number, since it is larger than the sum of its proper divisors (198339311).

3145530769 is a wasteful number, since it uses less digits than its factorization.

3145530769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639271.

The product of its (nonzero) digits is 340200, while the sum is 43.

The square root of 3145530769 is about 56085.0315948917. The cubic root of 3145530769 is about 1465.2036073870.

The spelling of 3145530769 in words is "three billion, one hundred forty-five million, five hundred thirty thousand, seven hundred sixty-nine".

Divisors: 1 19 101 1919 1639151 31143869 165554251 3145530769