1144664516 has 12 divisors (see below), whose sum is σ = 2003574720. Its totient is φ = 572214600.

The previous prime is 1144664503. The next prime is 1144664567. The reversal of 1144664516 is 6154664411.

It is a self number, because there is not a number n which added to its sum of digits gives 1144664516.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5336 + ... + 48143.

It is an arithmetic number, because the mean of its divisors is an integer number (166964560).

Almost surely, 2^1144664516 is an apocalyptic number.

It is an amenable number.

1144664516 is a deficient number, since it is larger than the sum of its proper divisors (858910204).

1144664516 is a wasteful number, since it uses less digits than its factorization.

1144664516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58834 (or 58832 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 1144664516 is about 33832.8910381599. The cubic root of 1144664516 is about 1046.0667711069.

The spelling of 1144664516 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, five hundred sixteen".