1144332855 has 96 divisors (see below), whose sum is σ = 2183163840. Its totient is φ = 552407040.

The previous prime is 1144332809. The next prime is 1144332863. The reversal of 1144332855 is 5582334411.

It is not a de Polignac number, because 1144332855 - 2⁸ = 1144332599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1929439 + ... + 1930031.

It is an arithmetic number, because the mean of its divisors is an integer number (22741290).

Almost surely, 2^1144332855 is an apocalyptic number.

1144332855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1144332855 is a deficient number, since it is larger than the sum of its proper divisors (1038830985).

1144332855 is a wasteful number, since it uses less digits than its factorization.

1144332855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 718 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1144332855 is about 33827.9892249007. The cubic root of 1144332855 is about 1045.9657304207.

The spelling of 1144332855 in words is "one billion, one hundred forty-four million, three hundred thirty-two thousand, eight hundred fifty-five".