1144385172 has 72 divisors (see below), whose sum is σ = 3428466496. Its totient is φ = 326965248.

The previous prime is 1144385161. The next prime is 1144385213. The reversal of 1144385172 is 2715834411.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77293 + ... + 90900.

Almost surely, 2^1144385172 is an apocalyptic number.

1144385172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1144385172 is an abundant number, since it is smaller than the sum of its proper divisors (2284081324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144385172 is a wasteful number, since it uses less digits than its factorization.

1144385172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168219 (or 168205 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1144385172 is about 33828.7624958407. The cubic root of 1144385172 is about 1045.9816701171.

The spelling of 1144385172 in words is "one billion, one hundred forty-four million, three hundred eighty-five thousand, one hundred seventy-two".