208045881019 has 2 divisors, whose sum is σ = 208045881020. Its totient is φ = 208045881018.

The previous prime is 208045880953. The next prime is 208045881049. The reversal of 208045881019 is 910188540802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208045881019 - 2¹⁵ = 208045848251 is a prime.

It is a super-2 number, since 2×208045881019² (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 208045881019.

It is not a weakly prime, because it can be changed into another prime (208045881049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104022940509 + 104022940510.

It is an arithmetic number, because the mean of its divisors is an integer number (104022940510).

Almost surely, 2^208045881019 is an apocalyptic number.

208045881019 is a deficient number, since it is larger than the sum of its proper divisors (1).

208045881019 is an equidigital number, since it uses as much as digits as its factorization.

208045881019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 46.

The spelling of 208045881019 in words is "two hundred eight billion, forty-five million, eight hundred eighty-one thousand, nineteen".