18922206744 has 128 divisors (see below), whose sum is σ = 60295104000. Its totient is φ = 5386131072.

The previous prime is 18922206727. The next prime is 18922206763. The reversal of 18922206744 is 44760222981.

It is a self number, because there is not a number n which added to its sum of digits gives 18922206744.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383467 + ... + 429989.

It is an arithmetic number, because the mean of its divisors is an integer number (471055500).

Almost surely, 2^18922206744 is an apocalyptic number.

18922206744 is a gapful number since it is divisible by the number (14) 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 18922206744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30147552000).

18922206744 is an abundant number, since it is smaller than the sum of its proper divisors (41372897256).

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

18922206744 is a wasteful number, since it uses less digits than its factorization.

18922206744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46814 (or 46804 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 18922206744 in words is "eighteen billion, nine hundred twenty-two million, two hundred six thousand, seven hundred forty-four".