1144664259 has 16 divisors (see below), whose sum is σ = 1554846720. Its totient is φ = 748912320.

The previous prime is 1144664237. The next prime is 1144664293. The reversal of 1144664259 is 9524664411.

It is not a de Polignac number, because 1144664259 - 2¹² = 1144660163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1144664259.

It is not an unprimeable number, because it can be changed into a prime (1144664219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25119 + ... + 54039.

It is an arithmetic number, because the mean of its divisors is an integer number (97177920).

Almost surely, 2^1144664259 is an apocalyptic number.

1144664259 is a deficient number, since it is larger than the sum of its proper divisors (410182461).

1144664259 is a wasteful number, since it uses less digits than its factorization.

1144664259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29170.

The product of its digits is 207360, while the sum is 42.

The square root of 1144664259 is about 33832.8872400805. The cubic root of 1144664259 is about 1046.0666928193.

The spelling of 1144664259 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, two hundred fifty-nine".