158149188 has 36 divisors (see below), whose sum is σ = 403896220. Its totient is φ = 52171776.

The previous prime is 158149183. The next prime is 158149223. The reversal of 158149188 is 881941851.

158149188 is a `hidden beast` number, since 1 + 5 + 81 + 491 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 103063104 + 55086084 = 10152^2 + 7422^2 .

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

It is a super-2 number, since 2×158149188² = 50022331330118688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158149183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19153 + ... + 26136.

Almost surely, 2^158149188 is an apocalyptic number.

158149188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

158149188 is an abundant number, since it is smaller than the sum of its proper divisors (245747032).

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

158149188 is a wasteful number, since it uses less digits than its factorization.

158149188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45396 (or 45391 counting only the distinct ones).

The product of its digits is 92160, while the sum is 45.

The square root of 158149188 is about 12575.7380697914. The cubic root of 158149188 is about 540.7821176892.

The spelling of 158149188 in words is "one hundred fifty-eight million, one hundred forty-nine thousand, one hundred eighty-eight".