2273945880 has 32 divisors (see below), whose sum is σ = 6821838000. Its totient is φ = 606385536.

The previous prime is 2273945833. The next prime is 2273945881. The reversal of 2273945880 is 885493722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273945881) 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 7 ways as a sum of consecutive naturals, for example, 9474655 + ... + 9474894.

Almost surely, 2^2273945880 is an apocalyptic number.

2273945880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2273945880 is an abundant number, since it is smaller than the sum of its proper divisors (4547892120).

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

2273945880 is a wasteful number, since it uses less digits than its factorization.

2273945880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18949563 (or 18949559 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 2273945880 is about 47685.9086104061. The cubic root of 2273945880 is about 1315.0028924262.

The spelling of 2273945880 in words is "two billion, two hundred seventy-three million, nine hundred forty-five thousand, eight hundred eighty".