138334172 has 6 divisors (see below), whose sum is σ = 242084808. Its totient is φ = 69167084.

The previous prime is 138334171. The next prime is 138334223. The reversal of 138334172 is 271433831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138334171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17291768 + ... + 17291775.

It is an arithmetic number, because the mean of its divisors is an integer number (40347468).

Almost surely, 2^138334172 is an apocalyptic number.

It is an amenable number.

138334172 is a deficient number, since it is larger than the sum of its proper divisors (103750636).

138334172 is a wasteful number, since it uses less digits than its factorization.

138334172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34583547 (or 34583545 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 138334172 is about 11761.5548291882. The cubic root of 138334172 is about 517.1817106601.

The spelling of 138334172 in words is "one hundred thirty-eight million, three hundred thirty-four thousand, one hundred seventy-two".