243652369 has 2 divisors, whose sum is σ = 243652370. Its totient is φ = 243652368.

The previous prime is 243652351. The next prime is 243652373. The reversal of 243652369 is 963256342.

243652369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193766400 + 49885969 = 13920^2 + 7063^2 .

It is a cyclic number.

It is not a de Polignac number, because 243652369 - 2⁵ = 243652337 is a prime.

It is a super-2 number, since 2×243652369² = 118732953838624322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243652379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121826184 + 121826185.

It is an arithmetic number, because the mean of its divisors is an integer number (121826185).

Almost surely, 2^243652369 is an apocalyptic number.

It is an amenable number.

243652369 is a deficient number, since it is larger than the sum of its proper divisors (1).

243652369 is an equidigital number, since it uses as much as digits as its factorization.

243652369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 40.

The square root of 243652369 is about 15609.3679884869. The cubic root of 243652369 is about 624.5830768219.

The spelling of 243652369 in words is "two hundred forty-three million, six hundred fifty-two thousand, three hundred sixty-nine".