3157684289 has 4 divisors (see below), whose sum is σ = 3158996400. Its totient is φ = 3156372180.

The previous prime is 3157684253. The next prime is 3157684291. The reversal of 3157684289 is 9824867513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3157684289 - 2²⁸ = 2889248833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3157684289.

It is not an unprimeable number, because it can be changed into a prime (3157683289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652439 + ... + 657260.

It is an arithmetic number, because the mean of its divisors is an integer number (789749100).

Almost surely, 2^3157684289 is an apocalyptic number.

It is an amenable number.

3157684289 is a deficient number, since it is larger than the sum of its proper divisors (1312111).

3157684289 is a wasteful number, since it uses less digits than its factorization.

3157684289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312110.

The product of its digits is 2903040, while the sum is 53.

The square root of 3157684289 is about 56193.2761903059. The cubic root of 3157684289 is about 1467.0882385646.

The spelling of 3157684289 in words is "three billion, one hundred fifty-seven million, six hundred eighty-four thousand, two hundred eighty-nine".