18391841083392 has 416 divisors, whose sum is σ = 59032067819520. Its totient is φ = 4975047475200.

The previous prime is 18391841083381. The next prime is 18391841083397. The reversal of 18391841083392 is 29338014819381.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18391841083397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3714770517 + ... + 3714775467.

Almost surely, 2^{18391841083392} is an apocalyptic number.

18391841083392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18391841083392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29516033909760).

18391841083392 is an abundant number, since it is smaller than the sum of its proper divisors (40640226736128).

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

18391841083392 is a wasteful number, since it uses less digits than its factorization.

18391841083392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7277 (or 7255 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 60.

The spelling of 18391841083392 in words is "eighteen trillion, three hundred ninety-one billion, eight hundred forty-one million, eighty-three thousand, three hundred ninety-two".