137808135 has 20 divisors (see below), whose sum is σ = 247034568. Its totient is φ = 73497456.

The previous prime is 137808119. The next prime is 137808149. The reversal of 137808135 is 531808731.

It is not a de Polignac number, because 137808135 - 2⁴ = 137808119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137808135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 169729 + ... + 170538.

Almost surely, 2^137808135 is an apocalyptic number.

137808135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

137808135 is a deficient number, since it is larger than the sum of its proper divisors (109226433).

137808135 is an equidigital number, since it uses as much as digits as its factorization.

137808135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340284 (or 340275 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 137808135 is about 11739.1709673213. The cubic root of 137808135 is about 516.5253235751.

The spelling of 137808135 in words is "one hundred thirty-seven million, eight hundred eight thousand, one hundred thirty-five".