158668632 has 40 divisors (see below), whose sum is σ = 444420900. Its totient is φ = 52889328.

The previous prime is 158668607. The next prime is 158668637. The reversal of 158668632 is 236866851.

158668632 is a `hidden beast` number, since 1 + 5 + 8 + 6 + 6 + 8 + 632 = 666.

158668632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158668637) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 121782 + ... + 123077.

Almost surely, 2^158668632 is an apocalyptic number.

158668632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158668632 is an abundant number, since it is smaller than the sum of its proper divisors (285752268).

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

158668632 is a wasteful number, since it uses less digits than its factorization.

158668632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244877 (or 244864 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 158668632 is about 12596.3737639052. The cubic root of 158668632 is about 541.3735403469.

The spelling of 158668632 in words is "one hundred fifty-eight million, six hundred sixty-eight thousand, six hundred thirty-two".