204838672019 has 2 divisors, whose sum is σ = 204838672020. Its totient is φ = 204838672018.

The previous prime is 204838671997. The next prime is 204838672061. The reversal of 204838672019 is 910276838402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204838672019 - 2³² = 200543704723 is a prime.

It is a super-2 number, since 2×204838672019² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (204838672319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102419336009 + 102419336010.

It is an arithmetic number, because the mean of its divisors is an integer number (102419336010).

Almost surely, 2^204838672019 is an apocalyptic number.

204838672019 is a deficient number, since it is larger than the sum of its proper divisors (1).

204838672019 is an equidigital number, since it uses as much as digits as its factorization.

204838672019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 204838672019 in words is "two hundred four billion, eight hundred thirty-eight million, six hundred seventy-two thousand, nineteen".