18822811580 has 24 divisors (see below), whose sum is σ = 39533087328. Its totient is φ = 7528137408.

The previous prime is 18822811577. The next prime is 18822811597. The reversal of 18822811580 is 8511822881.

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, 105722 + ... + 220958.

It is an arithmetic number, because the mean of its divisors is an integer number (1647211972).

Almost surely, 2^18822811580 is an apocalyptic number.

18822811580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18822811580 is an abundant number, since it is smaller than the sum of its proper divisors (20710275748).

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

18822811580 is a wasteful number, since it uses less digits than its factorization.

18822811580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123413 (or 123411 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 44.

The spelling of 18822811580 in words is "eighteen billion, eight hundred twenty-two million, eight hundred eleven thousand, five hundred eighty".