1143461443 has 4 divisors (see below), whose sum is σ = 1180347328. Its totient is φ = 1106575560.

The previous prime is 1143461441. The next prime is 1143461447. The reversal of 1143461443 is 3441643411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143461443 - 2¹ = 1143461441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 36885853 = 1143461443 / (1 + 1 + 4 + 3 + 4 + 6 + 1 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143461441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18442896 + ... + 18442957.

It is an arithmetic number, because the mean of its divisors is an integer number (295086832).

Almost surely, 2^1143461443 is an apocalyptic number.

1143461443 is a deficient number, since it is larger than the sum of its proper divisors (36885885).

1143461443 is an equidigital number, since it uses as much as digits as its factorization.

1143461443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36885884.

The product of its digits is 13824, while the sum is 31.

The square root of 1143461443 is about 33815.1067276151. The cubic root of 1143461443 is about 1045.7001612597.

The spelling of 1143461443 in words is "one billion, one hundred forty-three million, four hundred sixty-one thousand, four hundred forty-three".