8634520157 has 2 divisors, whose sum is σ = 8634520158. Its totient is φ = 8634520156.

The previous prime is 8634520123. The next prime is 8634520177. The reversal of 8634520157 is 7510254368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4698965401 + 3935554756 = 68549^2 + 62734^2 .

It is a cyclic number.

It is not a de Polignac number, because 8634520157 - 2¹⁸ = 8634258013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8634520177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4317260078 + 4317260079.

It is an arithmetic number, because the mean of its divisors is an integer number (4317260079).

Almost surely, 2^8634520157 is an apocalyptic number.

It is an amenable number.

8634520157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8634520157 is an equidigital number, since it uses as much as digits as its factorization.

8634520157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 8634520157 is about 92922.1187715820. The cubic root of 8634520157 is about 2051.5372294634.

The spelling of 8634520157 in words is "eight billion, six hundred thirty-four million, five hundred twenty thousand, one hundred fifty-seven".