30937916557 has 2 divisors, whose sum is σ = 30937916558. Its totient is φ = 30937916556.

The previous prime is 30937916551. The next prime is 30937916591. The reversal of 30937916557 is 75561973903.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23114337156 + 7823579401 = 152034^2 + 88451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30937916557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30937916498 and 30937916507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30937916551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15468958278 + 15468958279.

It is an arithmetic number, because the mean of its divisors is an integer number (15468958279).

Almost surely, 2^30937916557 is an apocalyptic number.

It is an amenable number.

30937916557 is a deficient number, since it is larger than the sum of its proper divisors (1).

30937916557 is an equidigital number, since it uses as much as digits as its factorization.

30937916557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5358150, while the sum is 55.

The spelling of 30937916557 in words is "thirty billion, nine hundred thirty-seven million, nine hundred sixteen thousand, five hundred fifty-seven".