137700018 has 24 divisors (see below), whose sum is σ = 305290128. Its totient is φ = 44832312.

The previous prime is 137700001. The next prime is 137700019. The reversal of 137700018 is 810007731.

It is a super-2 number, since 2×137700018² = 37922589914400648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137699964 and 137700000.

It is not an unprimeable number, because it can be changed into a prime (137700019) 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, 88180 + ... + 89727.

It is an arithmetic number, because the mean of its divisors is an integer number (12720422).

Almost surely, 2^137700018 is an apocalyptic number.

137700018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

137700018 is an abundant number, since it is smaller than the sum of its proper divisors (167590110).

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

137700018 is a wasteful number, since it uses less digits than its factorization.

137700018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177958 (or 177955 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 137700018 is about 11734.5650963297. The cubic root of 137700018 is about 516.3902087186.

Adding to 137700018 its reverse (810007731), we get a palindrome (947707749).

The spelling of 137700018 in words is "one hundred thirty-seven million, seven hundred thousand, eighteen".