137278164 has 24 divisors (see below), whose sum is σ = 327132288. Its totient is φ = 44785600.

The previous prime is 137278147. The next prime is 137278171. The reversal of 137278164 is 461872731.

It is a super-2 number, since 2×137278164² = 37690588622421792, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 121137 + ... + 122264.

It is an arithmetic number, because the mean of its divisors is an integer number (13630512).

Almost surely, 2^137278164 is an apocalyptic number.

It is an amenable number.

137278164 is an abundant number, since it is smaller than the sum of its proper divisors (189854124).

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

137278164 is a wasteful number, since it uses less digits than its factorization.

137278164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243455 (or 243453 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 137278164 is about 11716.5764624313. The cubic root of 137278164 is about 515.8623363305.

The spelling of 137278164 in words is "one hundred thirty-seven million, two hundred seventy-eight thousand, one hundred sixty-four".