18618730864633 has 8 divisors (see below), whose sum is σ = 18959742921600. Its totient is φ = 18280352105808.

The previous prime is 18618730864627. The next prime is 18618730864667. The reversal of 18618730864633 is 33646803781681.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18618730864633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18618730874633) 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, 658310266 + ... + 658338547.

It is an arithmetic number, because the mean of its divisors is an integer number (2369967865200).

Almost surely, 2^{18618730864633} is an apocalyptic number.

It is an amenable number.

18618730864633 is a deficient number, since it is larger than the sum of its proper divisors (341012056967).

18618730864633 is a wasteful number, since it uses less digits than its factorization.

18618730864633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316649071.

The product of its (nonzero) digits is 83607552, while the sum is 64.

The spelling of 18618730864633 in words is "eighteen trillion, six hundred eighteen billion, seven hundred thirty million, eight hundred sixty-four thousand, six hundred thirty-three".