138715170 has 32 divisors (see below), whose sum is σ = 363182400. Its totient is φ = 33627840.

The previous prime is 138715169. The next prime is 138715201. The reversal of 138715170 is 71517831.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209845 + ... + 210504.

It is an arithmetic number, because the mean of its divisors is an integer number (11349450).

Almost surely, 2^138715170 is an apocalyptic number.

138715170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138715170 is an abundant number, since it is smaller than the sum of its proper divisors (224467230).

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

138715170 is a wasteful number, since it uses less digits than its factorization.

138715170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420370.

The product of its (nonzero) digits is 5880, while the sum is 33.

The square root of 138715170 is about 11777.7404454335. The cubic root of 138715170 is about 517.6560802516.

The spelling of 138715170 in words is "one hundred thirty-eight million, seven hundred fifteen thousand, one hundred seventy".