243467641 has 2 divisors, whose sum is σ = 243467642. Its totient is φ = 243467640.

The previous prime is 243467633. The next prime is 243467647. The reversal of 243467641 is 146764342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220225600 + 23242041 = 14840^2 + 4821^2 .

It is a cyclic number.

It is not a de Polignac number, because 243467641 - 2³ = 243467633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243467641.

It is not a weakly prime, because it can be changed into another prime (243467647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121733820 + 121733821.

It is an arithmetic number, because the mean of its divisors is an integer number (121733821).

Almost surely, 2^243467641 is an apocalyptic number.

It is an amenable number.

243467641 is a deficient number, since it is larger than the sum of its proper divisors (1).

243467641 is an equidigital number, since it uses as much as digits as its factorization.

243467641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 37.

The square root of 243467641 is about 15603.4496506382. The cubic root of 243467641 is about 624.4251918350.

The spelling of 243467641 in words is "two hundred forty-three million, four hundred sixty-seven thousand, six hundred forty-one".