1145313643 has 4 divisors (see below), whose sum is σ = 1171948888. Its totient is φ = 1118678400.

The previous prime is 1145313607. The next prime is 1145313667. The reversal of 1145313643 is 3463135411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145313643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145313683) 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, 13317558 + ... + 13317643.

It is an arithmetic number, because the mean of its divisors is an integer number (292987222).

Almost surely, 2^1145313643 is an apocalyptic number.

1145313643 is a deficient number, since it is larger than the sum of its proper divisors (26635245).

1145313643 is an equidigital number, since it uses as much as digits as its factorization.

1145313643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26635244.

The product of its digits is 12960, while the sum is 31.

The square root of 1145313643 is about 33842.4828137653. The cubic root of 1145313643 is about 1046.2644714983.

The spelling of 1145313643 in words is "one billion, one hundred forty-five million, three hundred thirteen thousand, six hundred forty-three".