158185157 has 8 divisors (see below), whose sum is σ = 175848960. Its totient is φ = 141306480.

The previous prime is 158185151. The next prime is 158185171. The reversal of 158185157 is 751581851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158185157 - 2²² = 153990853 is a prime.

It is a super-2 number, since 2×158185157² = 50045087790229298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158185151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195857 + ... + 196662.

It is an arithmetic number, because the mean of its divisors is an integer number (21981120).

Almost surely, 2^158185157 is an apocalyptic number.

It is an amenable number.

158185157 is a deficient number, since it is larger than the sum of its proper divisors (17663803).

158185157 is a wasteful number, since it uses less digits than its factorization.

158185157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392563.

The product of its digits is 56000, while the sum is 41.

The square root of 158185157 is about 12577.1680834757. The cubic root of 158185157 is about 540.8231125619.

The spelling of 158185157 in words is "one hundred fifty-eight million, one hundred eighty-five thousand, one hundred fifty-seven".