38831539129 has 2 divisors, whose sum is σ = 38831539130. Its totient is φ = 38831539128.

The previous prime is 38831539121. The next prime is 38831539133. The reversal of 38831539129 is 92193513883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34881165225 + 3950373904 = 186765^2 + 62852^2 .

It is a cyclic number.

It is not a de Polignac number, because 38831539129 - 2³ = 38831539121 is a prime.

It is a super-2 number, since 2×38831539129² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38831539121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19415769564 + 19415769565.

It is an arithmetic number, because the mean of its divisors is an integer number (19415769565).

Almost surely, 2^38831539129 is an apocalyptic number.

It is an amenable number.

38831539129 is a deficient number, since it is larger than the sum of its proper divisors (1).

38831539129 is an equidigital number, since it uses as much as digits as its factorization.

38831539129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 52.

The spelling of 38831539129 in words is "thirty-eight billion, eight hundred thirty-one million, five hundred thirty-nine thousand, one hundred twenty-nine".