18396930048 has 168 divisors, whose sum is σ = 57068280072. Its totient is φ = 5255921664.

The previous prime is 18396930047. The next prime is 18396930049. The reversal of 18396930048 is 84003969381.

It is an interprime number because it is at equal distance from previous prime (18396930047) and next prime (18396930049).

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18396930047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1196586 + ... + 1211862.

Almost surely, 2^18396930048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18396930048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28534140036).

18396930048 is an abundant number, since it is smaller than the sum of its proper divisors (38671350024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18396930048 is an equidigital number, since it uses as much as digits as its factorization.

18396930048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15320 (or 15289 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 18396930048 in words is "eighteen billion, three hundred ninety-six million, nine hundred thirty thousand, forty-eight".