204133913 has 2 divisors, whose sum is σ = 204133914. Its totient is φ = 204133912.

The previous prime is 204133889. The next prime is 204133931. The reversal of 204133913 is 319331402.

It is a happy number.

Together with next prime (204133931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201725209 + 2408704 = 14203^2 + 1552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204133913 is a prime.

It is equal to p_11295161 and since 204133913 and 11295161 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (204133933) 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, 102066956 + 102066957.

It is an arithmetic number, because the mean of its divisors is an integer number (102066957).

Almost surely, 2^204133913 is an apocalyptic number.

It is an amenable number.

204133913 is a deficient number, since it is larger than the sum of its proper divisors (1).

204133913 is an equidigital number, since it uses as much as digits as its factorization.

204133913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 204133913 is about 14287.5439806847. The cubic root of 204133913 is about 588.8053130566.

The spelling of 204133913 in words is "two hundred four million, one hundred thirty-three thousand, nine hundred thirteen".