1144664213 has 16 divisors (see below), whose sum is σ = 1511063424. Its totient is φ = 839477760.

The previous prime is 1144664203. The next prime is 1144664219. The reversal of 1144664213 is 3124664411.

It is not a de Polignac number, because 1144664213 - 2⁶ = 1144664149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1144664213.

It is a congruent number.

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, 435920 + ... + 438537.

It is an arithmetic number, because the mean of its divisors is an integer number (94441464).

Almost surely, 2^1144664213 is an apocalyptic number.

It is an amenable number.

1144664213 is a deficient number, since it is larger than the sum of its proper divisors (366399211).

1144664213 is a wasteful number, since it uses less digits than its factorization.

1144664213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874492.

The product of its digits is 13824, while the sum is 32.

The square root of 1144664213 is about 33832.8865602685. The cubic root of 1144664213 is about 1046.0666788067.

The spelling of 1144664213 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, two hundred thirteen".