138164080 has 20 divisors (see below), whose sum is σ = 321231672. Its totient is φ = 55265600.

The previous prime is 138164077. The next prime is 138164087. The reversal of 138164080 is 80461831.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138164087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863446 + ... + 863605.

Almost surely, 2^138164080 is an apocalyptic number.

138164080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138164080 is an abundant number, since it is smaller than the sum of its proper divisors (183067592).

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

138164080 is a wasteful number, since it uses less digits than its factorization.

138164080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727064 (or 1727058 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 138164080 is about 11754.3217584002. The cubic root of 138164080 is about 516.9696527873.

The spelling of 138164080 in words is "one hundred thirty-eight million, one hundred sixty-four thousand, eighty".