18348365279 has 12 divisors (see below), whose sum is σ = 19070280216. Its totient is φ = 17652834528.

The previous prime is 18348365239. The next prime is 18348365363. The reversal of 18348365279 is 97256384381.

It is a de Polignac number, because none of the positive numbers 2^k-18348365279 is a prime.

It is a super-2 number, since 2×18348365279² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348365239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199457 + ... + 276549.

It is an arithmetic number, because the mean of its divisors is an integer number (1589190018).

Almost surely, 2^18348365279 is an apocalyptic number.

18348365279 is a deficient number, since it is larger than the sum of its proper divisors (721914937).

18348365279 is an equidigital number, since it uses as much as digits as its factorization.

18348365279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77434 (or 77405 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 18348365279 in words is "eighteen billion, three hundred forty-eight million, three hundred sixty-five thousand, two hundred seventy-nine".