158663912 has 24 divisors (see below), whose sum is σ = 327000450. Its totient is φ = 72119520.

The previous prime is 158663909. The next prime is 158663917. The reversal of 158663912 is 219366851.

It can be written as a sum of positive squares in only one way, i.e., 132388036 + 26275876 = 11506^2 + 5126^2 .

It is a super-2 number, since 2×158663912² = 50348473942287488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158663912.

It is not an unprimeable number, because it can be changed into a prime (158663917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80987 + ... + 82922.

Almost surely, 2^158663912 is an apocalyptic number.

It is an amenable number.

158663912 is an abundant number, since it is smaller than the sum of its proper divisors (168336538).

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

158663912 is a wasteful number, since it uses less digits than its factorization.

158663912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163937 (or 163922 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 158663912 is about 12596.1864070043. The cubic root of 158663912 is about 541.3681721183.

The spelling of 158663912 in words is "one hundred fifty-eight million, six hundred sixty-three thousand, nine hundred twelve".