138289170 has 32 divisors (see below), whose sum is σ = 334326528. Its totient is φ = 36606848.

The previous prime is 138289159. The next prime is 138289183. The reversal of 138289170 is 71982831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12714 + ... + 20933.

It is an arithmetic number, because the mean of its divisors is an integer number (10447704).

Almost surely, 2^138289170 is an apocalyptic number.

138289170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138289170 is an abundant number, since it is smaller than the sum of its proper divisors (196037358).

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

138289170 is a wasteful number, since it uses less digits than its factorization.

138289170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33794.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 138289170 is about 11759.6415761706. The cubic root of 138289170 is about 517.1256224806.

The spelling of 138289170 in words is "one hundred thirty-eight million, two hundred eighty-nine thousand, one hundred seventy".