18463376957 has 2 divisors, whose sum is σ = 18463376958. Its totient is φ = 18463376956.

The previous prime is 18463376933. The next prime is 18463376969. The reversal of 18463376957 is 75967336481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17524199641 + 939177316 = 132379^2 + 30646^2 .

It is a cyclic number.

It is not a de Polignac number, because 18463376957 - 2³⁴ = 1283507773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18463376896 and 18463376905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18463376927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9231688478 + 9231688479.

It is an arithmetic number, because the mean of its divisors is an integer number (9231688479).

Almost surely, 2^18463376957 is an apocalyptic number.

It is an amenable number.

18463376957 is a deficient number, since it is larger than the sum of its proper divisors (1).

18463376957 is an equidigital number, since it uses as much as digits as its factorization.

18463376957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 59.

The spelling of 18463376957 in words is "eighteen billion, four hundred sixty-three million, three hundred seventy-six thousand, nine hundred fifty-seven".