1144664253 has 24 divisors (see below), whose sum is σ = 1816102080. Its totient is φ = 691511040.

The previous prime is 1144664237. The next prime is 1144664293. The reversal of 1144664253 is 3524664411.

1144664253 is a `hidden beast` number, since 1 + 1 + 4 + 4 + 6 + 642 + 5 + 3 = 666.

It is not a de Polignac number, because 1144664253 - 2⁴ = 1144664237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144664203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141588 + ... + 149453.

It is an arithmetic number, because the mean of its divisors is an integer number (75670920).

Almost surely, 2^1144664253 is an apocalyptic number.

It is an amenable number.

1144664253 is a deficient number, since it is larger than the sum of its proper divisors (671437827).

1144664253 is a wasteful number, since it uses less digits than its factorization.

1144664253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291089 (or 291086 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1144664253 is about 33832.8871514094. The cubic root of 1144664253 is about 1046.0666909916.

The spelling of 1144664253 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, two hundred fifty-three".