1143954432 has 264 divisors, whose sum is σ = 3576518400. Its totient is φ = 351019008.

The previous prime is 1143954421. The next prime is 1143954433. The reversal of 1143954432 is 2344593411.

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 (1143954433) 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 23 ways as a sum of consecutive naturals, for example, 8229819 + ... + 8229957.

Almost surely, 2^1143954432 is an apocalyptic number.

1143954432 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 1143954432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788259200).

1143954432 is an abundant number, since it is smaller than the sum of its proper divisors (2432563968).

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

1143954432 is a wasteful number, since it uses less digits than its factorization.

1143954432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 210 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1143954432 is about 33822.3954207859. The cubic root of 1143954432 is about 1045.8504198193.

The spelling of 1143954432 in words is "one billion, one hundred forty-three million, nine hundred fifty-four thousand, four hundred thirty-two".