18277596137 has 2 divisors, whose sum is σ = 18277596138. Its totient is φ = 18277596136.

The previous prime is 18277596131. The next prime is 18277596149. The reversal of 18277596137 is 73169577281.

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., 9201413776 + 9076182361 = 95924^2 + 95269^2 .

It is a cyclic number.

It is not a de Polignac number, because 18277596137 - 2¹⁴ = 18277579753 is a prime.

It is not a weakly prime, because it can be changed into another prime (18277596131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9138798068 + 9138798069.

It is an arithmetic number, because the mean of its divisors is an integer number (9138798069).

Almost surely, 2^18277596137 is an apocalyptic number.

It is an amenable number.

18277596137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18277596137 is an equidigital number, since it uses as much as digits as its factorization.

18277596137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4445280, while the sum is 56.

The spelling of 18277596137 in words is "eighteen billion, two hundred seventy-seven million, five hundred ninety-six thousand, one hundred thirty-seven".