38635139 has 2 divisors, whose sum is σ = 38635140. Its totient is φ = 38635138.

The previous prime is 38635133. The next prime is 38635183. The reversal of 38635139 is 93153683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38635139 - 2¹⁶ = 38569603 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38635133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19317569 + 19317570.

It is an arithmetic number, because the mean of its divisors is an integer number (19317570).

Almost surely, 2^38635139 is an apocalyptic number.

38635139 is a deficient number, since it is larger than the sum of its proper divisors (1).

38635139 is an equidigital number, since it uses as much as digits as its factorization.

38635139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 38635139 is about 6215.7170945917. The cubic root of 38635139 is about 338.0602900050.

The spelling of 38635139 in words is "thirty-eight million, six hundred thirty-five thousand, one hundred thirty-nine".