138101912 has 16 divisors (see below), whose sum is σ = 278859840. Its totient is φ = 63739296.

The previous prime is 138101879. The next prime is 138101969. The reversal of 138101912 is 219101831.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 663848 + ... + 664055.

It is an arithmetic number, because the mean of its divisors is an integer number (17428740).

Almost surely, 2^138101912 is an apocalyptic number.

It is an amenable number.

138101912 is an abundant number, since it is smaller than the sum of its proper divisors (140757928).

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

138101912 is a wasteful number, since it uses less digits than its factorization.

138101912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327922 (or 1327918 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 138101912 is about 11751.6769867113. The cubic root of 138101912 is about 516.8921029858.

The spelling of 138101912 in words is "one hundred thirty-eight million, one hundred one thousand, nine hundred twelve".