158979438 has 24 divisors (see below), whose sum is σ = 345461688. Its totient is φ = 52838352.

The previous prime is 158979407. The next prime is 158979449. The reversal of 158979438 is 834979851.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6481 + ... + 18972.

It is an arithmetic number, because the mean of its divisors is an integer number (14394237).

Almost surely, 2^158979438 is an apocalyptic number.

158979438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

158979438 is an abundant number, since it is smaller than the sum of its proper divisors (186482250).

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

158979438 is a wasteful number, since it uses less digits than its factorization.

158979438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25808 (or 25805 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 158979438 is about 12608.7048502215. The cubic root of 158979438 is about 541.7267973115.

The spelling of 158979438 in words is "one hundred fifty-eight million, nine hundred seventy-nine thousand, four hundred thirty-eight".