138673190 has 16 divisors (see below), whose sum is σ = 250212240. Its totient is φ = 55335840.

The previous prime is 138673169. The next prime is 138673207. The reversal of 138673190 is 91376831.

It is a super-2 number, since 2×138673190² = 38460507249552200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12260 + ... + 20679.

It is an arithmetic number, because the mean of its divisors is an integer number (15638265).

Almost surely, 2^138673190 is an apocalyptic number.

138673190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138673190 is a deficient number, since it is larger than the sum of its proper divisors (111539050).

138673190 is a wasteful number, since it uses less digits than its factorization.

138673190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33367.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 138673190 is about 11775.9581351158. The cubic root of 138673190 is about 517.6038547817.

The spelling of 138673190 in words is "one hundred thirty-eight million, six hundred seventy-three thousand, one hundred ninety".