204953841919 has 2 divisors, whose sum is σ = 204953841920. Its totient is φ = 204953841918.

The previous prime is 204953841889. The next prime is 204953841941. The reversal of 204953841919 is 919148359402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204953841919 - 2⁷ = 204953841791 is a prime.

It is a super-2 number, since 2×204953841919² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204953841919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204953841979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102476920959 + 102476920960.

It is an arithmetic number, because the mean of its divisors is an integer number (102476920960).

Almost surely, 2^204953841919 is an apocalyptic number.

204953841919 is a deficient number, since it is larger than the sum of its proper divisors (1).

204953841919 is an equidigital number, since it uses as much as digits as its factorization.

204953841919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 204953841919 in words is "two hundred four billion, nine hundred fifty-three million, eight hundred forty-one thousand, nine hundred nineteen".