158538992 has 20 divisors (see below), whose sum is σ = 307699056. Its totient is φ = 79132800.

The previous prime is 158538973. The next prime is 158539013. The reversal of 158538992 is 299835851.

158538992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×158538992² = 50269223968752128, 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 158538992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373 + ... + 17859.

Almost surely, 2^158538992 is an apocalyptic number.

It is an amenable number.

158538992 is a deficient number, since it is larger than the sum of its proper divisors (149160064).

158538992 is a wasteful number, since it uses less digits than its factorization.

158538992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17096 (or 17090 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

The square root of 158538992 is about 12591.2267869338. The cubic root of 158538992 is about 541.2260573230.

The spelling of 158538992 in words is "one hundred fifty-eight million, five hundred thirty-eight thousand, nine hundred ninety-two".