3157191660 has 48 divisors (see below), whose sum is σ = 10103014656. Its totient is φ = 721643712.

The previous prime is 3157191647. The next prime is 3157191671. The reversal of 3157191660 is 661917513.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3758142 + ... + 3758981.

It is an arithmetic number, because the mean of its divisors is an integer number (210479472).

Almost surely, 2^3157191660 is an apocalyptic number.

3157191660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3157191660 is an abundant number, since it is smaller than the sum of its proper divisors (6945822996).

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

3157191660 is a wasteful number, since it uses less digits than its factorization.

3157191660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517142 (or 7517140 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 3157191660 is about 56188.8926746203. The cubic root of 3157191660 is about 1467.0119413234.

The spelling of 3157191660 in words is "three billion, one hundred fifty-seven million, one hundred ninety-one thousand, six hundred sixty".