18205000945 has 32 divisors (see below), whose sum is σ = 23126298624. Its totient is φ = 13735915200.

The previous prime is 18205000927. The next prime is 18205000949. The reversal of 18205000945 is 54900050281.

It is not a de Polignac number, because 18205000945 - 2¹⁷ = 18204869873 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 18205000945.

It is not an unprimeable number, because it can be changed into a prime (18205000949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3269734 + ... + 3275296.

It is an arithmetic number, because the mean of its divisors is an integer number (722696832).

Almost surely, 2^18205000945 is an apocalyptic number.

It is an amenable number.

18205000945 is a deficient number, since it is larger than the sum of its proper divisors (4921297679).

18205000945 is a wasteful number, since it uses less digits than its factorization.

With its successor (18205000946) it forms an eRAP, since the sums of their prime factors are consecutive (6133 and 6134).

18205000945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6133.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 18205000945 in words is "eighteen billion, two hundred five million, nine hundred forty-five", and thus it is an aban number.