453945643 has 4 divisors (see below), whose sum is σ = 454004008. Its totient is φ = 453887280.

The previous prime is 453945629. The next prime is 453945659. The reversal of 453945643 is 346549354.

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-453945643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 453945643.

It is not an unprimeable number, because it can be changed into a prime (453945673) 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, 15321 + ... + 33802.

It is an arithmetic number, because the mean of its divisors is an integer number (113501002).

Almost surely, 2^453945643 is an apocalyptic number.

453945643 is a deficient number, since it is larger than the sum of its proper divisors (58365).

453945643 is an equidigital number, since it uses as much as digits as its factorization.

453945643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58364.

The product of its digits is 777600, while the sum is 43.

The square root of 453945643 is about 21306.0001642730. Note that the first 3 decimals coincide. The cubic root of 453945643 is about 768.5426095946.

The spelling of 453945643 in words is "four hundred fifty-three million, nine hundred forty-five thousand, six hundred forty-three".