18363984101 has 16 divisors (see below), whose sum is σ = 19402882560. Its totient is φ = 17332464240.

The previous prime is 18363984097. The next prime is 18363984113. The reversal of 18363984101 is 10148936381.

It is not a de Polignac number, because 18363984101 - 2² = 18363984097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18363980101) 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, 6722906 + ... + 6725636.

It is an arithmetic number, because the mean of its divisors is an integer number (1212680160).

Almost surely, 2^18363984101 is an apocalyptic number.

It is an amenable number.

18363984101 is a deficient number, since it is larger than the sum of its proper divisors (1038898459).

18363984101 is a wasteful number, since it uses less digits than its factorization.

18363984101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 18363984101 in words is "eighteen billion, three hundred sixty-three million, nine hundred eighty-four thousand, one hundred one".