18227846912 has 72 divisors (see below), whose sum is σ = 40660531632. Its totient is φ = 8083251200.

The previous prime is 18227846873. The next prime is 18227846927. The reversal of 18227846912 is 21964872281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36518 + ... + 194394.

It is an arithmetic number, because the mean of its divisors is an integer number (564729606).

Almost surely, 2^18227846912 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 18227846912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20330265816).

18227846912 is an abundant number, since it is smaller than the sum of its proper divisors (22432684720).

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

18227846912 is a wasteful number, since it uses less digits than its factorization.

18227846912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157945 (or 157931 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 18227846912 in words is "eighteen billion, two hundred twenty-seven million, eight hundred forty-six thousand, nine hundred twelve".