138925180 has 24 divisors (see below), whose sum is σ = 292178880. Its totient is φ = 55487040.

The previous prime is 138925159. The next prime is 138925181. The reversal of 138925180 is 81529831.

138925180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138925181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9550 + ... + 19210.

It is an arithmetic number, because the mean of its divisors is an integer number (12174120).

Almost surely, 2^138925180 is an apocalyptic number.

138925180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138925180 is an abundant number, since it is smaller than the sum of its proper divisors (153253700).

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

138925180 is a wasteful number, since it uses less digits than its factorization.

138925180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10389 (or 10387 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 138925180 is about 11786.6526206553. The cubic root of 138925180 is about 517.9171863656.

It can be divided in two parts, 1389 and 25180, that added together give a square (26569 = 163²).

The spelling of 138925180 in words is "one hundred thirty-eight million, nine hundred twenty-five thousand, one hundred eighty".