2243505664 has 20 divisors (see below), whose sum is σ = 4482630504. Its totient is φ = 1121752576.

The previous prime is 2243505643. The next prime is 2243505683. The reversal of 2243505664 is 4665053422.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2190412 + ... + 2191435.

Almost surely, 2^2243505664 is an apocalyptic number.

It is an amenable number.

2243505664 is a deficient number, since it is larger than the sum of its proper divisors (2239124840).

2243505664 is an frugal number, since it uses more digits than its factorization.

2243505664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381865 (or 4381849 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 2243505664 is about 47365.6591213508. The cubic root of 2243505664 is about 1309.1087432662.

The spelling of 2243505664 in words is "two billion, two hundred forty-three million, five hundred five thousand, six hundred sixty-four".