204018959 has 2 divisors, whose sum is σ = 204018960. Its totient is φ = 204018958.

The previous prime is 204018943. The next prime is 204018977. The reversal of 204018959 is 959810402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204018959 - 2⁴ = 204018943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204018559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102009479 + 102009480.

It is an arithmetic number, because the mean of its divisors is an integer number (102009480).

Almost surely, 2^204018959 is an apocalyptic number.

204018959 is a deficient number, since it is larger than the sum of its proper divisors (1).

204018959 is an equidigital number, since it uses as much as digits as its factorization.

204018959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 204018959 is about 14283.5205394188. The cubic root of 204018959 is about 588.6947675913.

The spelling of 204018959 in words is "two hundred four million, eighteen thousand, nine hundred fifty-nine".