137381886 has 32 divisors (see below), whose sum is σ = 306324480. Its totient is φ = 45639288.

The previous prime is 137381813. The next prime is 137381887. The reversal of 137381886 is 688183731.

137381886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137381887) 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, 12435 + ... + 20721.

It is an arithmetic number, because the mean of its divisors is an integer number (9572640).

Almost surely, 2^137381886 is an apocalyptic number.

137381886 is an abundant number, since it is smaller than the sum of its proper divisors (168942594).

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

137381886 is a wasteful number, since it uses less digits than its factorization.

137381886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8605 (or 8599 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 137381886 is about 11721.0019196313. The cubic root of 137381886 is about 515.9922254102.

Subtracting from 137381886 its sum of digits (45), we obtain a square (137381841 = 11721²).

The spelling of 137381886 in words is "one hundred thirty-seven million, three hundred eighty-one thousand, eight hundred eighty-six".