18248507939 has 2 divisors, whose sum is σ = 18248507940. Its totient is φ = 18248507938.

The previous prime is 18248507917. The next prime is 18248507983. The reversal of 18248507939 is 93970584281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18248507939 - 2²⁸ = 17980072483 is a prime.

It is not a weakly prime, because it can be changed into another prime (18248507339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9124253969 + 9124253970.

It is an arithmetic number, because the mean of its divisors is an integer number (9124253970).

Almost surely, 2^18248507939 is an apocalyptic number.

18248507939 is a deficient number, since it is larger than the sum of its proper divisors (1).

18248507939 is an equidigital number, since it uses as much as digits as its factorization.

18248507939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 18248507939 in words is "eighteen billion, two hundred forty-eight million, five hundred seven thousand, nine hundred thirty-nine".