1145263443 has 4 divisors (see below), whose sum is σ = 1527017928. Its totient is φ = 763508960.

The previous prime is 1145263421. The next prime is 1145263487. The reversal of 1145263443 is 3443625411.

It is a happy number.

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 1145263443 - 2⁸ = 1145263187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145263043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190877238 + ... + 190877243.

It is an arithmetic number, because the mean of its divisors is an integer number (381754482).

Almost surely, 2^1145263443 is an apocalyptic number.

1145263443 is a deficient number, since it is larger than the sum of its proper divisors (381754485).

1145263443 is an equidigital number, since it uses as much as digits as its factorization.

1145263443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381754484.

The product of its digits is 34560, while the sum is 33.

The square root of 1145263443 is about 33841.7411342856. The cubic root of 1145263443 is about 1046.2491850761.

Adding to 1145263443 its reverse (3443625411), we get a palindrome (4588888854).

The spelling of 1145263443 in words is "one billion, one hundred forty-five million, two hundred sixty-three thousand, four hundred forty-three".