18245167079 has 2 divisors, whose sum is σ = 18245167080. Its totient is φ = 18245167078.

The previous prime is 18245167063. The next prime is 18245167093. The reversal of 18245167079 is 97076154281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18245167079 - 2⁴ = 18245167063 is a prime.

It is a super-2 number, since 2×18245167079² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18245167019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9122583539 + 9122583540.

It is an arithmetic number, because the mean of its divisors is an integer number (9122583540).

Almost surely, 2^18245167079 is an apocalyptic number.

18245167079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18245167079 is an equidigital number, since it uses as much as digits as its factorization.

18245167079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 18245167079 in words is "eighteen billion, two hundred forty-five million, one hundred sixty-seven thousand, seventy-nine".