1144664316 has 18 divisors (see below), whose sum is σ = 2893457112. Its totient is φ = 381554760.

The previous prime is 1144664293. The next prime is 1144664317. The reversal of 1144664316 is 6134664411.

1144664316 is a `hidden beast` number, since 1 + 1 + 4 + 4 + 6 + 643 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 31796231 = 1144664316 / (1 + 1 + 4 + 4 + 6 + 6 + 4 + 3 + 1 + 6).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144664317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15898080 + ... + 15898151.

Almost surely, 2^1144664316 is an apocalyptic number.

It is an amenable number.

1144664316 is an abundant number, since it is smaller than the sum of its proper divisors (1748792796).

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

1144664316 is a wasteful number, since it uses less digits than its factorization.

1144664316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31796241 (or 31796236 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1144664316 is about 33832.8880824561. Note that the first 3 decimals coincide. The cubic root of 1144664316 is about 1046.0667101827.

The spelling of 1144664316 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, three hundred sixteen".