157631886 has 16 divisors (see below), whose sum is σ = 350293200. Its totient is φ = 52543944.

The previous prime is 157631879. The next prime is 157631899. The reversal of 157631886 is 688136751.

157631886 is a `hidden beast` number, since 1 + 5 + 7 + 631 + 8 + 8 + 6 = 666.

It is a super-2 number, since 2×157631886² = 49695622967833992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459501 + ... + 1459608.

It is an arithmetic number, because the mean of its divisors is an integer number (21893325).

Almost surely, 2^157631886 is an apocalyptic number.

157631886 is an abundant number, since it is smaller than the sum of its proper divisors (192661314).

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

157631886 is a wasteful number, since it uses less digits than its factorization.

157631886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919120 (or 2919114 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 157631886 is about 12555.1537624993. The cubic root of 157631886 is about 540.1918454154.

The spelling of 157631886 in words is "one hundred fifty-seven million, six hundred thirty-one thousand, eight hundred eighty-six".