243613465 has 4 divisors (see below), whose sum is σ = 292336164. Its totient is φ = 194890768.

The previous prime is 243613457. The next prime is 243613477. The reversal of 243613465 is 564316342.

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

It can be written as a sum of positive squares in 2 ways, for example, as 144889369 + 98724096 = 12037^2 + 9936^2 .

It is a cyclic number.

It is not a de Polignac number, because 243613465 - 2³ = 243613457 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 243613465.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24361342 + ... + 24361351.

It is an arithmetic number, because the mean of its divisors is an integer number (73084041).

Almost surely, 2^243613465 is an apocalyptic number.

It is an amenable number.

243613465 is a deficient number, since it is larger than the sum of its proper divisors (48722699).

243613465 is an equidigital number, since it uses as much as digits as its factorization.

243613465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48722698.

The product of its digits is 51840, while the sum is 34.

The square root of 243613465 is about 15608.1217640048. The cubic root of 243613465 is about 624.5498326368.

The spelling of 243613465 in words is "two hundred forty-three million, six hundred thirteen thousand, four hundred sixty-five".