158131444 has 12 divisors (see below), whose sum is σ = 276818500. Its totient is φ = 79040448.

The previous prime is 158131439. The next prime is 158131483. The reversal of 158131444 is 444131851.

It can be written as a sum of positive squares in 2 ways, for example, as 145443600 + 12687844 = 12060^2 + 3562^2 .

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, 19282 + ... + 26230.

Almost surely, 2^158131444 is an apocalyptic number.

It is an amenable number.

158131444 is a deficient number, since it is larger than the sum of its proper divisors (118687056).

158131444 is a wasteful number, since it uses less digits than its factorization.

158131444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12642 (or 12640 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 158131444 is about 12575.0325645702. The cubic root of 158131444 is about 540.7618920678.

The spelling of 158131444 in words is "one hundred fifty-eight million, one hundred thirty-one thousand, four hundred forty-four".