18207879241 has 2 divisors, whose sum is σ = 18207879242. Its totient is φ = 18207879240.

The previous prime is 18207879169. The next prime is 18207879253. The reversal of 18207879241 is 14297870281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16444215225 + 1763664016 = 128235^2 + 41996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18207879241 is a prime.

It is not a weakly prime, because it can be changed into another prime (18207849241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9103939620 + 9103939621.

It is an arithmetic number, because the mean of its divisors is an integer number (9103939621).

Almost surely, 2^18207879241 is an apocalyptic number.

It is an amenable number.

18207879241 is a deficient number, since it is larger than the sum of its proper divisors (1).

18207879241 is an equidigital number, since it uses as much as digits as its factorization.

18207879241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 18207879241 in words is "eighteen billion, two hundred seven million, eight hundred seventy-nine thousand, two hundred forty-one".