137986515 has 24 divisors (see below), whose sum is σ = 240712368. Its totient is φ = 73120320.

The previous prime is 137986439. The next prime is 137986529. The reversal of 137986515 is 515689731.

It is a happy number.

It is not a de Polignac number, because 137986515 - 2⁸ = 137986259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2701 + ... + 16830.

It is an arithmetic number, because the mean of its divisors is an integer number (10029682).

Almost surely, 2^137986515 is an apocalyptic number.

137986515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

137986515 is a deficient number, since it is larger than the sum of its proper divisors (102725853).

137986515 is a wasteful number, since it uses less digits than its factorization.

137986515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19699 (or 19696 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 137986515 is about 11746.7661507327. The cubic root of 137986515 is about 516.7480923813.

The spelling of 137986515 in words is "one hundred thirty-seven million, nine hundred eighty-six thousand, five hundred fifteen".