18084898571 has 4 divisors (see below), whose sum is σ = 19148716152. Its totient is φ = 17021080992.

The previous prime is 18084898547. The next prime is 18084898577. The reversal of 18084898571 is 17589848081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18084898571 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 18084898571.

It is not an unprimeable number, because it can be changed into a prime (18084898577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531908765 + ... + 531908798.

It is an arithmetic number, because the mean of its divisors is an integer number (4787179038).

Almost surely, 2^18084898571 is an apocalyptic number.

18084898571 is a deficient number, since it is larger than the sum of its proper divisors (1063817581).

18084898571 is a wasteful number, since it uses less digits than its factorization.

18084898571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063817580.

The product of its (nonzero) digits is 5160960, while the sum is 59.

The spelling of 18084898571 in words is "eighteen billion, eighty-four million, eight hundred ninety-eight thousand, five hundred seventy-one".