204138367 has 2 divisors, whose sum is σ = 204138368. Its totient is φ = 204138366.

The previous prime is 204138359. The next prime is 204138373. The reversal of 204138367 is 763831402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204138367 - 2³ = 204138359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204138307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102069183 + 102069184.

It is an arithmetic number, because the mean of its divisors is an integer number (102069184).

Almost surely, 2^204138367 is an apocalyptic number.

204138367 is a deficient number, since it is larger than the sum of its proper divisors (1).

204138367 is an equidigital number, since it uses as much as digits as its factorization.

204138367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 204138367 is about 14287.6998498709. The cubic root of 204138367 is about 588.8095954086.

Adding to 204138367 its reverse (763831402), we get a palindrome (967969769).

The spelling of 204138367 in words is "two hundred four million, one hundred thirty-eight thousand, three hundred sixty-seven".