1144865375 has 8 divisors (see below), whose sum is σ = 1428792144. Its totient is φ = 915892200.

The previous prime is 1144865347. The next prime is 1144865377. The reversal of 1144865375 is 5735684411.

It is not a de Polignac number, because 1144865375 - 2²⁰ = 1143816799 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 (1144865377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4579337 + ... + 4579586.

It is an arithmetic number, because the mean of its divisors is an integer number (178599018).

Almost surely, 2^1144865375 is an apocalyptic number.

1144865375 is a deficient number, since it is larger than the sum of its proper divisors (283926769).

1144865375 is an frugal number, since it uses more digits than its factorization.

1144865375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9158938 (or 9158928 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 1144865375 is about 33835.8593063631. The cubic root of 1144865375 is about 1046.1279534109.

The spelling of 1144865375 in words is "one billion, one hundred forty-four million, eight hundred sixty-five thousand, three hundred seventy-five".