1144431775 has 6 divisors (see below), whose sum is σ = 1419095432. Its totient is φ = 915545400.

The previous prime is 1144431751. The next prime is 1144431779. The reversal of 1144431775 is 5771344411.

It is not a de Polignac number, because 1144431775 - 2²¹ = 1142334623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144431779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22888611 + ... + 22888660.

Almost surely, 2^1144431775 is an apocalyptic number.

1144431775 is a deficient number, since it is larger than the sum of its proper divisors (274663657).

1144431775 is an equidigital number, since it uses as much as digits as its factorization.

1144431775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45777281 (or 45777276 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 1144431775 is about 33829.4512961709. The cubic root of 1144431775 is about 1045.9958684900.

The spelling of 1144431775 in words is "one billion, one hundred forty-four million, four hundred thirty-one thousand, seven hundred seventy-five".