2185274880 has 120 divisors (see below), whose sum is σ = 7568301312. Its totient is φ = 582733824.

The previous prime is 2185274801. The next prime is 2185274887. The reversal of 2185274880 is 884725812.

It is a happy number.

2185274880 is a `hidden beast` number, since 2 + 1 + 8 + 527 + 48 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185274887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24384 + ... + 70463.

Almost surely, 2^2185274880 is an apocalyptic number.

2185274880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2185274880 is an abundant number, since it is smaller than the sum of its proper divisors (5383026432).

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

2185274880 is an equidigital number, since it uses as much as digits as its factorization.

2185274880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94876 (or 94857 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 2185274880 is about 46746.9237490554. The cubic root of 2185274880 is about 1297.6832267111.

The spelling of 2185274880 in words is "two billion, one hundred eighty-five million, two hundred seventy-four thousand, eight hundred eighty".