158685916 has 6 divisors (see below), whose sum is σ = 277700360. Its totient is φ = 79342956.

The previous prime is 158685913. The next prime is 158685971. The reversal of 158685916 is 619586851.

It is a self number, because there is not a number n which added to its sum of digits gives 158685916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158685911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19835736 + ... + 19835743.

Almost surely, 2^158685916 is an apocalyptic number.

It is an amenable number.

158685916 is a deficient number, since it is larger than the sum of its proper divisors (119014444).

158685916 is a wasteful number, since it uses less digits than its factorization.

158685916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39671483 (or 39671481 counting only the distinct ones).

The product of its digits is 518400, while the sum is 49.

The square root of 158685916 is about 12597.0598156872. The cubic root of 158685916 is about 541.3931971634.

The spelling of 158685916 in words is "one hundred fifty-eight million, six hundred eighty-five thousand, nine hundred sixteen".