1145513443 has 4 divisors (see below), whose sum is σ = 1146151288. Its totient is φ = 1144875600.

The previous prime is 1145513429. The next prime is 1145513471. The reversal of 1145513443 is 3443155411.

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 1145513443 - 2²⁵ = 1111959011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143513443) 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, 316221 + ... + 319822.

It is an arithmetic number, because the mean of its divisors is an integer number (286537822).

Almost surely, 2^1145513443 is an apocalyptic number.

1145513443 is a deficient number, since it is larger than the sum of its proper divisors (637845).

1145513443 is an equidigital number, since it uses as much as digits as its factorization.

1145513443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637844.

The product of its digits is 14400, while the sum is 31.

The square root of 1145513443 is about 33845.4345961165. The cubic root of 1145513443 is about 1046.3253082505.

Adding to 1145513443 its reverse (3443155411), we get a palindrome (4588668854).

The spelling of 1145513443 in words is "one billion, one hundred forty-five million, five hundred thirteen thousand, four hundred forty-three".