137185690 has 16 divisors (see below), whose sum is σ = 248452128. Its totient is φ = 54536976.

The previous prime is 137185687. The next prime is 137185691. The reversal of 137185690 is 96581731.

It is a super-2 number, since 2×137185690² = 37639827081552200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137185691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40452 + ... + 43711.

It is an arithmetic number, because the mean of its divisors is an integer number (15528258).

Almost surely, 2^137185690 is an apocalyptic number.

137185690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137185690 is a deficient number, since it is larger than the sum of its proper divisors (111266438).

137185690 is a wasteful number, since it uses less digits than its factorization.

137185690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84333.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 137185690 is about 11712.6295083555. The cubic root of 137185690 is about 515.7464777268.

The spelling of 137185690 in words is "one hundred thirty-seven million, one hundred eighty-five thousand, six hundred ninety".