1144996872 has 32 divisors (see below), whose sum is σ = 2863576800. Its totient is φ = 381521024.

The previous prime is 1144996871. The next prime is 1144996877. The reversal of 1144996872 is 2786994411.

It is a super-3 number, since 3×1144996872³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1144996871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69583 + ... + 84449.

It is an arithmetic number, because the mean of its divisors is an integer number (89486775).

Almost surely, 2^1144996872 is an apocalyptic number.

1144996872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1144996872 is an abundant number, since it is smaller than the sum of its proper divisors (1718579928).

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

1144996872 is a wasteful number, since it uses less digits than its factorization.

1144996872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18085 (or 18081 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 1144996872 is about 33837.8024109132. The cubic root of 1144996872 is about 1046.1680039484.

The spelling of 1144996872 in words is "one billion, one hundred forty-four million, nine hundred ninety-six thousand, eight hundred seventy-two".