137781164 has 6 divisors (see below), whose sum is σ = 241117044. Its totient is φ = 68890580.

The previous prime is 137781139. The next prime is 137781173. The reversal of 137781164 is 461187731.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17222642 + ... + 17222649.

It is an arithmetic number, because the mean of its divisors is an integer number (40186174).

Almost surely, 2^137781164 is an apocalyptic number.

It is an amenable number.

137781164 is a deficient number, since it is larger than the sum of its proper divisors (103335880).

137781164 is a wasteful number, since it uses less digits than its factorization.

137781164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34445295 (or 34445293 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 137781164 is about 11738.0221502602. The cubic root of 137781164 is about 516.4916242741.

The spelling of 137781164 in words is "one hundred thirty-seven million, seven hundred eighty-one thousand, one hundred sixty-four".