243790801 has 2 divisors, whose sum is σ = 243790802. Its totient is φ = 243790800.

The previous prime is 243790769. The next prime is 243790819. The reversal of 243790801 is 108097342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161417025 + 82373776 = 12705^2 + 9076^2 .

It is a cyclic number.

It is not a de Polignac number, because 243790801 - 2⁵ = 243790769 is a prime.

It is not a weakly prime, because it can be changed into another prime (243790601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121895400 + 121895401.

It is an arithmetic number, because the mean of its divisors is an integer number (121895401).

Almost surely, 2^243790801 is an apocalyptic number.

It is an amenable number.

243790801 is a deficient number, since it is larger than the sum of its proper divisors (1).

243790801 is an equidigital number, since it uses as much as digits as its factorization.

243790801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 243790801 is about 15613.8016190805. The cubic root of 243790801 is about 624.7013408270.

The spelling of 243790801 in words is "two hundred forty-three million, seven hundred ninety thousand, eight hundred one".