3157278564 has 144 divisors (see below), whose sum is σ = 8633399040. Its totient is φ = 890239680.

The previous prime is 3157278557. The next prime is 3157278601. The reversal of 3157278564 is 4658727513.

3157278564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2810907 + ... + 2812029.

It is an arithmetic number, because the mean of its divisors is an integer number (59954160).

Almost surely, 2^3157278564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3157278564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4316699520).

3157278564 is an abundant number, since it is smaller than the sum of its proper divisors (5476120476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3157278564 is a wasteful number, since it uses less digits than its factorization.

3157278564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1217 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The square root of 3157278564 is about 56189.6659893970. The cubic root of 3157278564 is about 1467.0254013907.

The spelling of 3157278564 in words is "three billion, one hundred fifty-seven million, two hundred seventy-eight thousand, five hundred sixty-four".