243768453 has 4 divisors (see below), whose sum is σ = 325024608. Its totient is φ = 162512300.

The previous prime is 243768443. The next prime is 243768479. The reversal of 243768453 is 354867342.

243768453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243768453 - 2⁸ = 243768197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243768443) 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, 40628073 + ... + 40628078.

It is an arithmetic number, because the mean of its divisors is an integer number (81256152).

Almost surely, 2^243768453 is an apocalyptic number.

It is an amenable number.

243768453 is a deficient number, since it is larger than the sum of its proper divisors (81256155).

243768453 is an equidigital number, since it uses as much as digits as its factorization.

243768453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81256154.

The product of its digits is 483840, while the sum is 42.

The square root of 243768453 is about 15613.0859537761. The cubic root of 243768453 is about 624.6822517117.

The spelling of 243768453 in words is "two hundred forty-three million, seven hundred sixty-eight thousand, four hundred fifty-three".