2251230664 has 32 divisors (see below), whose sum is σ = 4475001600. Its totient is φ = 1059860160.

The previous prime is 2251230649. The next prime is 2251230671. The reversal of 2251230664 is 4660321522.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 113494 + ... + 131845.

It is an arithmetic number, because the mean of its divisors is an integer number (139843800).

Almost surely, 2^2251230664 is an apocalyptic number.

It is an amenable number.

2251230664 is a deficient number, since it is larger than the sum of its proper divisors (2223770936).

2251230664 is a wasteful number, since it uses less digits than its factorization.

2251230664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245413 (or 245409 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2251230664 is about 47447.1354667487. The cubic root of 2251230664 is about 1310.6095611219.

The spelling of 2251230664 in words is "two billion, two hundred fifty-one million, two hundred thirty thousand, six hundred sixty-four".