1144664443 has 16 divisors (see below), whose sum is σ = 1299558400. Its totient is φ = 999488160.

The previous prime is 1144664431. The next prime is 1144664471. The reversal of 1144664443 is 3444664411.

It is not a de Polignac number, because 1144664443 - 2¹⁷ = 1144533371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144662443) 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, 179398 + ... + 185668.

It is an arithmetic number, because the mean of its divisors is an integer number (81222400).

Almost surely, 2^1144664443 is an apocalyptic number.

1144664443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1144664443 is a deficient number, since it is larger than the sum of its proper divisors (154893957).

1144664443 is a wasteful number, since it uses less digits than its factorization.

1144664443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042.

The product of its digits is 110592, while the sum is 37.

The square root of 1144664443 is about 33832.8899593280. The cubic root of 1144664443 is about 1046.0667488696.

The spelling of 1144664443 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, four hundred forty-three".