137388688 has 10 divisors (see below), whose sum is σ = 266190614. Its totient is φ = 68694336.

The previous prime is 137388673. The next prime is 137388707. The reversal of 137388688 is 886883731.

It can be written as a sum of positive squares in only one way, i.e., 114233344 + 23155344 = 10688^2 + 4812^2 .

It is a super-2 number, since 2×137388688² = 37751303180722688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4293381 + ... + 4293412.

Almost surely, 2^137388688 is an apocalyptic number.

It is an amenable number.

137388688 is a deficient number, since it is larger than the sum of its proper divisors (128801926).

137388688 is an equidigital number, since it uses as much as digits as its factorization.

137388688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586801 (or 8586795 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 137388688 is about 11721.2920789476. The cubic root of 137388688 is about 516.0007411403. Note that the first 3 decimals are identical.

The spelling of 137388688 in words is "one hundred thirty-seven million, three hundred eighty-eight thousand, six hundred eighty-eight".