137893690 has 32 divisors (see below), whose sum is σ = 277079616. Its totient is φ = 48975360.

The previous prime is 137893687. The next prime is 137893727. The reversal of 137893690 is 96398731.

It is a super-2 number, since 2×137893690² = 38029339483632200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 137893690.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9847 + ... + 19306.

It is an arithmetic number, because the mean of its divisors is an integer number (8658738).

Almost surely, 2^137893690 is an apocalyptic number.

137893690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137893690 is an abundant number, since it is smaller than the sum of its proper divisors (139185926).

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

137893690 is a wasteful number, since it uses less digits than its factorization.

137893690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29214.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 137893690 is about 11742.8143986014. The cubic root of 137893690 is about 516.6321924044.

The spelling of 137893690 in words is "one hundred thirty-seven million, eight hundred ninety-three thousand, six hundred ninety".