138238792903 has 2 divisors, whose sum is σ = 138238792904. Its totient is φ = 138238792902.

The previous prime is 138238792889. The next prime is 138238792919. The reversal of 138238792903 is 309297832831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138238792903 - 2⁵ = 138238792871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138238792973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69119396451 + 69119396452.

It is an arithmetic number, because the mean of its divisors is an integer number (69119396452).

Almost surely, 2^138238792903 is an apocalyptic number.

138238792903 is a deficient number, since it is larger than the sum of its proper divisors (1).

138238792903 is an equidigital number, since it uses as much as digits as its factorization.

138238792903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 138238792903 in words is "one hundred thirty-eight billion, two hundred thirty-eight million, seven hundred ninety-two thousand, nine hundred three".