158139764 has 12 divisors (see below), whose sum is σ = 277531044. Its totient is φ = 78845184.

The previous prime is 158139713. The next prime is 158139769. The reversal of 158139764 is 467931851.

It can be written as a sum of positive squares in 2 ways, for example, as 121440400 + 36699364 = 11020^2 + 6058^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158139769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54587 + ... + 57410.

It is an arithmetic number, because the mean of its divisors is an integer number (23127587).

Almost surely, 2^158139764 is an apocalyptic number.

It is an amenable number.

158139764 is a deficient number, since it is larger than the sum of its proper divisors (119391280).

158139764 is a wasteful number, since it uses less digits than its factorization.

158139764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112354 (or 112352 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 158139764 is about 12575.3633744715. The cubic root of 158139764 is about 540.7713758658.

The spelling of 158139764 in words is "one hundred fifty-eight million, one hundred thirty-nine thousand, seven hundred sixty-four".