18354740659 has 16 divisors (see below), whose sum is σ = 20004323328. Its totient is φ = 16774273152.

The previous prime is 18354740653. The next prime is 18354740681. The reversal of 18354740659 is 95604745381.

It is a cyclic number.

It is not a de Polignac number, because 18354740659 - 2⁹ = 18354740147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18354740653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11032 + ... + 191914.

It is an arithmetic number, because the mean of its divisors is an integer number (1250270208).

Almost surely, 2^18354740659 is an apocalyptic number.

18354740659 is a deficient number, since it is larger than the sum of its proper divisors (1649582669).

18354740659 is a wasteful number, since it uses less digits than its factorization.

18354740659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181074.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 18354740659 in words is "eighteen billion, three hundred fifty-four million, seven hundred forty thousand, six hundred fifty-nine".