137031645 has 16 divisors (see below), whose sum is σ = 232148160. Its totient is φ = 68784384.

The previous prime is 137031637. The next prime is 137031703. The reversal of 137031645 is 546130731.

It is not a de Polignac number, because 137031645 - 2³ = 137031637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268435 + ... + 268944.

It is an arithmetic number, because the mean of its divisors is an integer number (14509260).

Almost surely, 2^137031645 is an apocalyptic number.

137031645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137031645 is a deficient number, since it is larger than the sum of its proper divisors (95116515).

137031645 is a wasteful number, since it uses less digits than its factorization.

137031645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537404.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 137031645 is about 11706.0516400706. The cubic root of 137031645 is about 515.5533625362.

The spelling of 137031645 in words is "one hundred thirty-seven million, thirty-one thousand, six hundred forty-five".