137387845 has 32 divisors (see below), whose sum is σ = 194715648. Its totient is φ = 91093248.

The previous prime is 137387837. The next prime is 137387849. The reversal of 137387845 is 548783731.

It is a cyclic number.

It is not a de Polignac number, because 137387845 - 2³ = 137387837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137387795 and 137387804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137387849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358524 + ... + 358906.

It is an arithmetic number, because the mean of its divisors is an integer number (6084864).

Almost surely, 2^137387845 is an apocalyptic number.

It is an amenable number.

137387845 is a deficient number, since it is larger than the sum of its proper divisors (57327803).

137387845 is a wasteful number, since it uses less digits than its factorization.

137387845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its digits is 564480, while the sum is 46.

The square root of 137387845 is about 11721.2561186931. The cubic root of 137387845 is about 515.9996857659. Note that the first 3 decimals are identical.

The spelling of 137387845 in words is "one hundred thirty-seven million, three hundred eighty-seven thousand, eight hundred forty-five".