138677179 has 2 divisors, whose sum is σ = 138677180. Its totient is φ = 138677178.

The previous prime is 138677171. The next prime is 138677183. The reversal of 138677179 is 971776831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138677179 - 2³ = 138677171 is a prime.

It is not a weakly prime, because it can be changed into another prime (138677171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69338589 + 69338590.

It is an arithmetic number, because the mean of its divisors is an integer number (69338590).

Almost surely, 2^138677179 is an apocalyptic number.

138677179 is a deficient number, since it is larger than the sum of its proper divisors (1).

138677179 is an equidigital number, since it uses as much as digits as its factorization.

138677179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 49.

The square root of 138677179 is about 11776.1275044048. The cubic root of 138677179 is about 517.6088177741.

The spelling of 138677179 in words is "one hundred thirty-eight million, six hundred seventy-seven thousand, one hundred seventy-nine".