138437610 has 32 divisors (see below), whose sum is σ = 349738560. Its totient is φ = 34973568.

The previous prime is 138437603. The next prime is 138437617. The reversal of 138437610 is 16734831.

It is an interprime number because it is at equal distance from previous prime (138437603) and next prime (138437617).

It is not an unprimeable number, because it can be changed into a prime (138437617) 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 15 ways as a sum of consecutive naturals, for example, 120867 + ... + 122006.

It is an arithmetic number, because the mean of its divisors is an integer number (10929330).

Almost surely, 2^138437610 is an apocalyptic number.

138437610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138437610 is an abundant number, since it is smaller than the sum of its proper divisors (211300950).

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

138437610 is a wasteful number, since it uses less digits than its factorization.

138437610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242902.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 138437610 is about 11765.9513002562. The cubic root of 138437610 is about 517.3105843693.

The spelling of 138437610 in words is "one hundred thirty-eight million, four hundred thirty-seven thousand, six hundred ten".