137701908 has 18 divisors (see below), whose sum is σ = 348079914. Its totient is φ = 45900624.

The previous prime is 137701877. The next prime is 137701919. The reversal of 137701908 is 809107731.

137701908 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 78535044 + 59166864 = 8862^2 + 7692^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3825053 = 137701908 / (1 + 3 + 7 + 7 + 0 + 1 + 9 + 0 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1912491 + ... + 1912562.

It is an arithmetic number, because the mean of its divisors is an integer number (19337773).

Almost surely, 2^137701908 is an apocalyptic number.

137701908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

137701908 is an abundant number, since it is smaller than the sum of its proper divisors (210378006).

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

137701908 is a wasteful number, since it uses less digits than its factorization.

137701908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825063 (or 3825058 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 137701908 is about 11734.6456273720. The cubic root of 137701908 is about 516.3925712770.

The spelling of 137701908 in words is "one hundred thirty-seven million, seven hundred one thousand, nine hundred eight".