18895640275 has 24 divisors (see below), whose sum is σ = 24019743888. Its totient is φ = 14736960000.

The previous prime is 18895640249. The next prime is 18895640279. The reversal of 18895640275 is 57204659881.

It is a happy number.

It is not a de Polignac number, because 18895640275 - 2⁵ = 18895640243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18895640279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1563255 + ... + 1575295.

It is an arithmetic number, because the mean of its divisors is an integer number (1000822662).

Almost surely, 2^18895640275 is an apocalyptic number.

18895640275 is a deficient number, since it is larger than the sum of its proper divisors (5124103613).

18895640275 is a wasteful number, since it uses less digits than its factorization.

18895640275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13623 (or 13618 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 18895640275 in words is "eighteen billion, eight hundred ninety-five million, six hundred forty thousand, two hundred seventy-five".