1144156752 has 140 divisors (see below), whose sum is σ = 3345878484. Its totient is φ = 378846720.

The previous prime is 1144156721. The next prime is 1144156757. The reversal of 1144156752 is 2576514411.

1144156752 is a `hidden beast` number, since 1 + 1 + 4 + 41 + 567 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80353296 + 1063803456 = 8964^2 + 32616^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144156757) 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 27 ways as a sum of consecutive naturals, for example, 2717502 + ... + 2717922.

Almost surely, 2^1144156752 is an apocalyptic number.

1144156752 is a gapful number since it is divisible by the number (12) 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 1144156752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672939242).

1144156752 is an abundant number, since it is smaller than the sum of its proper divisors (2201721732).

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

1144156752 is an equidigital number, since it uses as much as digits as its factorization.

1144156752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 659 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 1144156752 is about 33825.3862062209. The cubic root of 1144156752 is about 1045.9120726200.

The spelling of 1144156752 in words is "one billion, one hundred forty-four million, one hundred fifty-six thousand, seven hundred fifty-two".