138245179 has 2 divisors, whose sum is σ = 138245180. Its totient is φ = 138245178.

The previous prime is 138245171. The next prime is 138245231. The reversal of 138245179 is 971542831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138245179 - 2³ = 138245171 is a prime.

It is a super-2 number, since 2×138245179² = 38223459033484082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138245171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69122589 + 69122590.

It is an arithmetic number, because the mean of its divisors is an integer number (69122590).

Almost surely, 2^138245179 is an apocalyptic number.

138245179 is a deficient number, since it is larger than the sum of its proper divisors (1).

138245179 is an equidigital number, since it uses as much as digits as its factorization.

138245179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 138245179 is about 11757.7710047441. The cubic root of 138245179 is about 517.0707825972.

The spelling of 138245179 in words is "one hundred thirty-eight million, two hundred forty-five thousand, one hundred seventy-nine".