137387844 has 36 divisors (see below), whose sum is σ = 378858480. Its totient is φ = 41632560.

The previous prime is 137387837. The next prime is 137387849. The reversal of 137387844 is 448783731.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 137387844.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173074 + ... + 173865.

Almost surely, 2^137387844 is an apocalyptic number.

It is an amenable number.

137387844 is an abundant number, since it is smaller than the sum of its proper divisors (241470636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137387844 is a wasteful number, since it uses less digits than its factorization.

137387844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346960 (or 346955 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 137387844 is about 11721.2560760355. The cubic root of 137387844 is about 515.9996845140. Note that the first 3 decimals are identical.

The spelling of 137387844 in words is "one hundred thirty-seven million, three hundred eighty-seven thousand, eight hundred forty-four".