157911804 has 36 divisors (see below), whose sum is σ = 406702296. Its totient is φ = 51643488.

The previous prime is 157911791. The next prime is 157911811. The reversal of 157911804 is 408119751.

157911804 is a `hidden beast` number, since 1 + 579 + 1 + 1 + 80 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×157911804² = 49872275685068832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39474 + ... + 43289.

It is an arithmetic number, because the mean of its divisors is an integer number (11297286).

Almost surely, 2^157911804 is an apocalyptic number.

It is an amenable number.

157911804 is an abundant number, since it is smaller than the sum of its proper divisors (248790492).

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

157911804 is a wasteful number, since it uses less digits than its factorization.

157911804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82826 (or 82821 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 157911804 is about 12566.2963517498. The cubic root of 157911804 is about 540.5114085203.

The spelling of 157911804 in words is "one hundred fifty-seven million, nine hundred eleven thousand, eight hundred four".