137156385 has 16 divisors (see below), whose sum is σ = 220080384. Its totient is φ = 72940032.

The previous prime is 137156377. The next prime is 137156389. The reversal of 137156385 is 583651731.

It is a happy number.

It is not a de Polignac number, because 137156385 - 2³ = 137156377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137156389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7657 + ... + 18246.

It is an arithmetic number, because the mean of its divisors is an integer number (13755024).

Almost surely, 2^137156385 is an apocalyptic number.

137156385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137156385 is a deficient number, since it is larger than the sum of its proper divisors (82923999).

137156385 is a wasteful number, since it uses less digits than its factorization.

137156385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26264.

The product of its digits is 75600, while the sum is 39.

The square root of 137156385 is about 11711.3784414987. The cubic root of 137156385 is about 515.7097512848.

It can be divided in two parts, 13715 and 6385, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 137156385 in words is "one hundred thirty-seven million, one hundred fifty-six thousand, three hundred eighty-five".