1144652688 has 80 divisors (see below), whose sum is σ = 3303955200. Its totient is φ = 379416960.

The previous prime is 1144652659. The next prime is 1144652689. The reversal of 1144652688 is 8862564411.

It is a happy number.

1144652688 is a `hidden beast` number, since 1 + 1 + 4 + 46 + 526 + 88 = 666.

It is a super-2 number, since 2×1144652688² = 2620459552291250688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1144652689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70873 + ... + 85511.

It is an arithmetic number, because the mean of its divisors is an integer number (41299440).

Almost surely, 2^1144652688 is an apocalyptic number.

1144652688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1144652688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651977600).

1144652688 is an abundant number, since it is smaller than the sum of its proper divisors (2159302512).

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

1144652688 is a wasteful number, since it uses less digits than its factorization.

1144652688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14837 (or 14825 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 1144652688 is about 33832.7162373937. The cubic root of 1144652688 is about 1046.0631680366.

The spelling of 1144652688 in words is "one billion, one hundred forty-four million, six hundred fifty-two thousand, six hundred eighty-eight".