18945698375 has 8 divisors (see below), whose sum is σ = 23644231728. Its totient is φ = 15156558600.

The previous prime is 18945698363. The next prime is 18945698381. The reversal of 18945698375 is 57389654981.

It is not a de Polignac number, because 18945698375 - 2¹² = 18945694279 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 75782669 + ... + 75782918.

It is an arithmetic number, because the mean of its divisors is an integer number (2955528966).

Almost surely, 2^18945698375 is an apocalyptic number.

18945698375 is a deficient number, since it is larger than the sum of its proper divisors (4698533353).

18945698375 is an equidigital number, since it uses as much as digits as its factorization.

18945698375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151565602 (or 151565592 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 65.

The spelling of 18945698375 in words is "eighteen billion, nine hundred forty-five million, six hundred ninety-eight thousand, three hundred seventy-five".