1144733264 has 20 divisors (see below), whose sum is σ = 2222941056. Its totient is φ = 571071072.

The previous prime is 1144733263. The next prime is 1144733321. The reversal of 1144733264 is 4623374411.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144733263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73664 + ... + 87839.

Almost surely, 2^1144733264 is an apocalyptic number.

It is an amenable number.

1144733264 is a deficient number, since it is larger than the sum of its proper divisors (1078207792).

1144733264 is a wasteful number, since it uses less digits than its factorization.

1144733264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161954 (or 161948 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 1144733264 is about 33833.9070164827. The cubic root of 1144733264 is about 1046.0877127767.

The spelling of 1144733264 in words is "one billion, one hundred forty-four million, seven hundred thirty-three thousand, two hundred sixty-four".