38139107 has 2 divisors, whose sum is σ = 38139108. Its totient is φ = 38139106.

The previous prime is 38139097. The next prime is 38139121. The reversal of 38139107 is 70193183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38139107 - 2⁸ = 38138851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38139197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19069553 + 19069554.

It is an arithmetic number, because the mean of its divisors is an integer number (19069554).

Almost surely, 2^38139107 is an apocalyptic number.

38139107 is a deficient number, since it is larger than the sum of its proper divisors (1).

38139107 is an equidigital number, since it uses as much as digits as its factorization.

38139107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 38139107 is about 6175.6867634296. The cubic root of 38139107 is about 336.6072817301.

The spelling of 38139107 in words is "thirty-eight million, one hundred thirty-nine thousand, one hundred seven".