2193918480 has 640 divisors, whose sum is σ = 8799436800. Its totient is φ = 498161664.

The previous prime is 2193918449. The next prime is 2193918491. The reversal of 2193918480 is 848193912.

2193918480 is a `hidden beast` number, since 219 + 391 + 8 + 48 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 27771081 + ... + 27771159.

It is an arithmetic number, because the mean of its divisors is an integer number (13749120).

Almost surely, 2^2193918480 is an apocalyptic number.

2193918480 is a gapful number since it is divisible by the number (20) 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 2193918480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4399718400).

2193918480 is an abundant number, since it is smaller than the sum of its proper divisors (6605518320).

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

2193918480 is a wasteful number, since it uses less digits than its factorization.

2193918480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2193918480 is about 46839.2835128805. The cubic root of 2193918480 is about 1299.3919207415.

The spelling of 2193918480 in words is "two billion, one hundred ninety-three million, nine hundred eighteen thousand, four hundred eighty".