18227081576 has 64 divisors (see below), whose sum is σ = 38005156800. Its totient is φ = 8125286400.

The previous prime is 18227081557. The next prime is 18227081581. The reversal of 18227081576 is 67518072281.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18227081576.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1890095 + ... + 1899713.

It is an arithmetic number, because the mean of its divisors is an integer number (593830575).

Almost surely, 2^18227081576 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 18227081576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19002578400).

18227081576 is an abundant number, since it is smaller than the sum of its proper divisors (19778075224).

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

18227081576 is a wasteful number, since it uses less digits than its factorization.

18227081576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050 (or 10046 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 18227081576 in words is "eighteen billion, two hundred twenty-seven million, eighty-one thousand, five hundred seventy-six".