18168353579 has 8 divisors (see below), whose sum is σ = 18970504560. Its totient is φ = 17377913056.

The previous prime is 18168353573. The next prime is 18168353617. The reversal of 18168353579 is 97535386181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18168353579 - 2⁴ = 18168353563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18168353573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2924444 + ... + 2930649.

It is an arithmetic number, because the mean of its divisors is an integer number (2371313070).

Almost surely, 2^18168353579 is an apocalyptic number.

18168353579 is a deficient number, since it is larger than the sum of its proper divisors (802150981).

18168353579 is a wasteful number, since it uses less digits than its factorization.

18168353579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855229.

The product of its digits is 5443200, while the sum is 56.

The spelling of 18168353579 in words is "eighteen billion, one hundred sixty-eight million, three hundred fifty-three thousand, five hundred seventy-nine".