138163276 has 24 divisors (see below), whose sum is σ = 248265360. Its totient is φ = 67238400.

The previous prime is 138163243. The next prime is 138163321. The reversal of 138163276 is 672361831.

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 7 ways as a sum of consecutive naturals, for example, 100836 + ... + 102196.

It is an arithmetic number, because the mean of its divisors is an integer number (10344390).

Almost surely, 2^138163276 is an apocalyptic number.

It is an amenable number.

138163276 is a deficient number, since it is larger than the sum of its proper divisors (110102084).

138163276 is a wasteful number, since it uses less digits than its factorization.

138163276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 2023 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 138163276 is about 11754.2875581636. The cubic root of 138163276 is about 516.9686500076.

The spelling of 138163276 in words is "one hundred thirty-eight million, one hundred sixty-three thousand, two hundred seventy-six".