204941993 has 2 divisors, whose sum is σ = 204941994. Its totient is φ = 204941992.

The previous prime is 204941969. The next prime is 204942041. The reversal of 204941993 is 399149402.

204941993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202407529 + 2534464 = 14227^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 204941993 - 2¹⁶ = 204876457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204941993.

It is not a weakly prime, because it can be changed into another prime (204941963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102470996 + 102470997.

It is an arithmetic number, because the mean of its divisors is an integer number (102470997).

Almost surely, 2^204941993 is an apocalyptic number.

It is an amenable number.

204941993 is a deficient number, since it is larger than the sum of its proper divisors (1).

204941993 is an equidigital number, since it uses as much as digits as its factorization.

204941993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 204941993 is about 14315.7952276498. The cubic root of 204941993 is about 589.5812340108.

The spelling of 204941993 in words is "two hundred four million, nine hundred forty-one thousand, nine hundred ninety-three".