18360418745 has 4 divisors (see below), whose sum is σ = 22032502500. Its totient is φ = 14688334992.

The previous prime is 18360418697. The next prime is 18360418753. The reversal of 18360418745 is 54781406381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8294109184 + 10066309561 = 91072^2 + 100331^2 .

It is a cyclic number.

It is not a de Polignac number, because 18360418745 - 2¹⁰ = 18360417721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18360418745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836041870 + ... + 1836041879.

It is an arithmetic number, because the mean of its divisors is an integer number (5508125625).

Almost surely, 2^18360418745 is an apocalyptic number.

It is an amenable number.

18360418745 is a deficient number, since it is larger than the sum of its proper divisors (3672083755).

18360418745 is an equidigital number, since it uses as much as digits as its factorization.

18360418745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672083754.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 18360418745 in words is "eighteen billion, three hundred sixty million, four hundred eighteen thousand, seven hundred forty-five".