30836138917 has 2 divisors, whose sum is σ = 30836138918. Its totient is φ = 30836138916.

The previous prime is 30836138899. The next prime is 30836138933. The reversal of 30836138917 is 71983163803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30835711201 + 427716 = 175601^2 + 654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30836138917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30836132917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15418069458 + 15418069459.

It is an arithmetic number, because the mean of its divisors is an integer number (15418069459).

Almost surely, 2^30836138917 is an apocalyptic number.

It is an amenable number.

30836138917 is a deficient number, since it is larger than the sum of its proper divisors (1).

30836138917 is an equidigital number, since it uses as much as digits as its factorization.

30836138917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 30836138917 in words is "thirty billion, eight hundred thirty-six million, one hundred thirty-eight thousand, nine hundred seventeen".