158381332 has 12 divisors (see below), whose sum is σ = 279912276. Its totient is φ = 78406400.

The previous prime is 158381317. The next prime is 158381351. The reversal of 158381332 is 233183851.

It can be written as a sum of positive squares in 2 ways, for example, as 68624656 + 89756676 = 8284^2 + 9474^2 .

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, 195613 + ... + 196420.

It is an arithmetic number, because the mean of its divisors is an integer number (23326023).

Almost surely, 2^158381332 is an apocalyptic number.

It is an amenable number.

158381332 is a deficient number, since it is larger than the sum of its proper divisors (121530944).

158381332 is a wasteful number, since it uses less digits than its factorization.

158381332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392138 (or 392136 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 158381332 is about 12584.9645212055. The cubic root of 158381332 is about 541.0465893778.

The spelling of 158381332 in words is "one hundred fifty-eight million, three hundred eighty-one thousand, three hundred thirty-two".