137687930 has 16 divisors (see below), whose sum is σ = 262417320. Its totient is φ = 51835392.

The previous prime is 137687929. The next prime is 137687933. The reversal of 137687930 is 39786731.

It can be written as a sum of positive squares in 4 ways, for example, as 126405049 + 11282881 = 11243^2 + 3359^2 .

It is not an unprimeable number, because it can be changed into a prime (137687933) 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, 404795 + ... + 405134.

Almost surely, 2^137687930 is an apocalyptic number.

137687930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137687930 is a deficient number, since it is larger than the sum of its proper divisors (124729390).

137687930 is a wasteful number, since it uses less digits than its factorization.

137687930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809953.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 137687930 is about 11734.0500254601. The cubic root of 137687930 is about 516.3750978333.

The spelling of 137687930 in words is "one hundred thirty-seven million, six hundred eighty-seven thousand, nine hundred thirty".