138933107 has 2 divisors, whose sum is σ = 138933108. Its totient is φ = 138933106.

The previous prime is 138933097. The next prime is 138933121. The reversal of 138933107 is 701339831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138933107 - 2¹⁸ = 138670963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138933167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69466553 + 69466554.

It is an arithmetic number, because the mean of its divisors is an integer number (69466554).

Almost surely, 2^138933107 is an apocalyptic number.

138933107 is a deficient number, since it is larger than the sum of its proper divisors (1).

138933107 is an equidigital number, since it uses as much as digits as its factorization.

138933107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 138933107 is about 11786.9888860557. The cubic root of 138933107 is about 517.9270368752.

The spelling of 138933107 in words is "one hundred thirty-eight million, nine hundred thirty-three thousand, one hundred seven".