2257891980 has 48 divisors (see below), whose sum is σ = 6654842880. Its totient is φ = 570414528.

The previous prime is 2257891967. The next prime is 2257891981. The reversal of 2257891980 is 891987522.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2257891981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 989164 + ... + 991443.

It is an arithmetic number, because the mean of its divisors is an integer number (138642560).

Almost surely, 2^2257891980 is an apocalyptic number.

2257891980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2257891980 is an abundant number, since it is smaller than the sum of its proper divisors (4396950900).

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

2257891980 is a wasteful number, since it uses less digits than its factorization.

2257891980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980638 (or 1980636 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 2257891980 is about 47517.2808565473. The cubic root of 2257891980 is about 1311.9009714506.

The spelling of 2257891980 in words is "two billion, two hundred fifty-seven million, eight hundred ninety-one thousand, nine hundred eighty".