18822969216 has 160 divisors (see below), whose sum is σ = 57949392600. Its totient is φ = 6057870336.

The previous prime is 18822969203. The next prime is 18822969233. The reversal of 18822969216 is 61296922881.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 269371 + ... + 331973.

Almost surely, 2^18822969216 is an apocalyptic number.

18822969216 is a gapful number since it is divisible by the number (16) 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 18822969216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28974696300).

18822969216 is an abundant number, since it is smaller than the sum of its proper divisors (39126423384).

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

18822969216 is an equidigital number, since it uses as much as digits as its factorization.

18822969216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62658 (or 62637 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The spelling of 18822969216 in words is "eighteen billion, eight hundred twenty-two million, nine hundred sixty-nine thousand, two hundred sixteen".