158791332 has 24 divisors (see below), whose sum is σ = 423443776. Its totient is φ = 45368928.

The previous prime is 158791301. The next prime is 158791349. The reversal of 158791332 is 233197851.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945103 + ... + 945270.

Almost surely, 2^158791332 is an apocalyptic number.

158791332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158791332 is an abundant number, since it is smaller than the sum of its proper divisors (264652444).

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

158791332 is a wasteful number, since it uses less digits than its factorization.

158791332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890387 (or 1890385 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 158791332 is about 12601.2432719950. The cubic root of 158791332 is about 541.5130542028.

The spelling of 158791332 in words is "one hundred fifty-eight million, seven hundred ninety-one thousand, three hundred thirty-two".