2243946780 has 96 divisors (see below), whose sum is σ = 7206420480. Its totient is φ = 579078720.

The previous prime is 2243946779. The next prime is 2243946791. The reversal of 2243946780 is 876493422.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50284 + ... + 83763.

It is an arithmetic number, because the mean of its divisors is an integer number (75066880).

Almost surely, 2^2243946780 is an apocalyptic number.

2243946780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243946780 is an abundant number, since it is smaller than the sum of its proper divisors (4962473700).

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

2243946780 is a wasteful number, since it uses less digits than its factorization.

2243946780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134096 (or 134088 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 2243946780 is about 47370.3153884371. The cubic root of 2243946780 is about 1309.1945362254.

The spelling of 2243946780 in words is "two billion, two hundred forty-three million, nine hundred forty-six thousand, seven hundred eighty".