1143435456 has 84 divisors (see below), whose sum is σ = 3282293664. Its totient is φ = 380582400.

The previous prime is 1143435437. The next prime is 1143435481. The reversal of 1143435456 is 6545343411.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1143435456.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 610201 + ... + 612071.

Almost surely, 2^1143435456 is an apocalyptic number.

1143435456 is a gapful number since it is divisible by the number (16) 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 1143435456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641146832).

1143435456 is an abundant number, since it is smaller than the sum of its proper divisors (2138858208).

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

1143435456 is a wasteful number, since it uses less digits than its factorization.

1143435456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950 (or 2937 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1143435456 is about 33814.7224740940. The cubic root of 1143435456 is about 1045.6922394605.

Adding to 1143435456 its product of digits (86400), we get a square (1143521856 = 33816²).

Adding to 1143435456 its reverse (6545343411), we get a palindrome (7688778867).

The spelling of 1143435456 in words is "one billion, one hundred forty-three million, four hundred thirty-five thousand, four hundred fifty-six".