1244866264 has 8 divisors (see below), whose sum is σ = 2334124260. Its totient is φ = 622433128.

The previous prime is 1244866261. The next prime is 1244866277. The reversal of 1244866264 is 4626684421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1244866264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244866261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77804134 + ... + 77804149.

Almost surely, 2^1244866264 is an apocalyptic number.

It is an amenable number.

1244866264 is a deficient number, since it is larger than the sum of its proper divisors (1089257996).

1244866264 is a wasteful number, since it uses less digits than its factorization.

1244866264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155608289 (or 155608285 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The square root of 1244866264 is about 35282.6623711987. The cubic root of 1244866264 is about 1075.7406150055.

The spelling of 1244866264 in words is "one billion, two hundred forty-four million, eight hundred sixty-six thousand, two hundred sixty-four".