204013603 has 2 divisors, whose sum is σ = 204013604. Its totient is φ = 204013602.

The previous prime is 204013591. The next prime is 204013609. The reversal of 204013603 is 306310402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204013603 - 2²⁵ = 170459171 is a prime.

It is not a weakly prime, because it can be changed into another prime (204013609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102006801 + 102006802.

It is an arithmetic number, because the mean of its divisors is an integer number (102006802).

Almost surely, 2^204013603 is an apocalyptic number.

204013603 is a deficient number, since it is larger than the sum of its proper divisors (1).

204013603 is an equidigital number, since it uses as much as digits as its factorization.

204013603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 204013603 is about 14283.3330493971. Note that the first 3 decimals coincide. The cubic root of 204013603 is about 588.6896159839.

The spelling of 204013603 in words is "two hundred four million, thirteen thousand, six hundred three".