137079978 has 32 divisors (see below), whose sum is σ = 317108736. Its totient is φ = 38692848.

The previous prime is 137079967. The next prime is 137079983. The reversal of 137079978 is 879970731.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 137079978.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16176 + ... + 23147.

It is an arithmetic number, because the mean of its divisors is an integer number (9909648).

Almost surely, 2^137079978 is an apocalyptic number.

137079978 is an abundant number, since it is smaller than the sum of its proper divisors (180028758).

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

137079978 is a wasteful number, since it uses less digits than its factorization.

137079978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39418.

The product of its (nonzero) digits is 666792, while the sum is 51.

The square root of 137079978 is about 11708.1159030819. The cubic root of 137079978 is about 515.6139697328.

The spelling of 137079978 in words is "one hundred thirty-seven million, seventy-nine thousand, nine hundred seventy-eight".