1144642255 has 16 divisors (see below), whose sum is σ = 1385756064. Its totient is φ = 907620480.

The previous prime is 1144642253. The next prime is 1144642259. The reversal of 1144642255 is 5522464411.

It is not a de Polignac number, because 1144642255 - 2¹ = 1144642253 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 1144642255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144642253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360304 + ... + 363466.

It is an arithmetic number, because the mean of its divisors is an integer number (86609754).

Almost surely, 2^1144642255 is an apocalyptic number.

1144642255 is a deficient number, since it is larger than the sum of its proper divisors (241113809).

1144642255 is a wasteful number, since it uses less digits than its factorization.

1144642255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786.

The product of its digits is 38400, while the sum is 34.

The square root of 1144642255 is about 33832.5620519641. The cubic root of 1144642255 is about 1046.0599898935.

The spelling of 1144642255 in words is "one billion, one hundred forty-four million, six hundred forty-two thousand, two hundred fifty-five".