1812298880 has 64 divisors (see below), whose sum is σ = 4951471680. Its totient is φ = 621358080.

The previous prime is 1812298877. The next prime is 1812298903. The reversal of 1812298880 is 888922181.

It is a tau number, because it is divible by the number of its divisors (64).

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, 197786 + ... + 206745.

It is an arithmetic number, because the mean of its divisors is an integer number (77366745).

Almost surely, 2^1812298880 is an apocalyptic number.

1812298880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1812298880 is an abundant number, since it is smaller than the sum of its proper divisors (3139172800).

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

1812298880 is an equidigital number, since it uses as much as digits as its factorization.

1812298880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404557 (or 404545 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 47.

The square root of 1812298880 is about 42571.1038146769. The cubic root of 1812298880 is about 1219.2046414953.

The spelling of 1812298880 in words is "one billion, eight hundred twelve million, two hundred ninety-eight thousand, eight hundred eighty".