204632993 has 2 divisors, whose sum is σ = 204632994. Its totient is φ = 204632992.

The previous prime is 204632957. The next prime is 204633031. The reversal of 204632993 is 399236402.

It is an a-pointer prime, because the next prime (204633031) can be obtained adding 204632993 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181899169 + 22733824 = 13487^2 + 4768^2 .

It is a cyclic number.

It is not a de Polignac number, because 204632993 - 2⁶ = 204632929 is a prime.

It is not a weakly prime, because it can be changed into another prime (204632933) 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, 102316496 + 102316497.

It is an arithmetic number, because the mean of its divisors is an integer number (102316497).

Almost surely, 2^204632993 is an apocalyptic number.

It is an amenable number.

204632993 is a deficient number, since it is larger than the sum of its proper divisors (1).

204632993 is an equidigital number, since it uses as much as digits as its factorization.

204632993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 204632993 is about 14304.9988815099. The cubic root of 204632993 is about 589.2847725000.

The spelling of 204632993 in words is "two hundred four million, six hundred thirty-two thousand, nine hundred ninety-three".