18473975745 has 16 divisors (see below), whose sum is σ = 29562122880. Its totient is φ = 9851533184.

The previous prime is 18473975713. The next prime is 18473975771. The reversal of 18473975745 is 54757937481.

It is a cyclic number.

It is not a de Polignac number, because 18473975745 - 2⁵ = 18473975713 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 50236 + ... + 198674.

It is an arithmetic number, because the mean of its divisors is an integer number (1847632680).

Almost surely, 2^18473975745 is an apocalyptic number.

18473975745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18473975745 is a deficient number, since it is larger than the sum of its proper divisors (11088147135).

18473975745 is a wasteful number, since it uses less digits than its factorization.

18473975745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156744.

The product of its digits is 29635200, while the sum is 60.

The spelling of 18473975745 in words is "eighteen billion, four hundred seventy-three million, nine hundred seventy-five thousand, seven hundred forty-five".