18267495745 has 8 divisors (see below), whose sum is σ = 22081002984. Its totient is φ = 14507324544.

The previous prime is 18267495733. The next prime is 18267495761. The reversal of 18267495745 is 54759476281.

It can be written as a sum of positive squares in 4 ways, for example, as 3850450704 + 14417045041 = 62052^2 + 120071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18267495745 - 2²⁹ = 17730624833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18267495745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13333254 + ... + 13334623.

It is an arithmetic number, because the mean of its divisors is an integer number (2760125373).

Almost surely, 2^18267495745 is an apocalyptic number.

It is an amenable number.

18267495745 is a deficient number, since it is larger than the sum of its proper divisors (3813507239).

18267495745 is a wasteful number, since it uses less digits than its factorization.

18267495745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26668019.

The product of its digits is 16934400, while the sum is 58.

The spelling of 18267495745 in words is "eighteen billion, two hundred sixty-seven million, four hundred ninety-five thousand, seven hundred forty-five".