1899999002849 has 2 divisors, whose sum is σ = 1899999002850. Its totient is φ = 1899999002848.

The previous prime is 1899999002821. The next prime is 1899999002903. The reversal of 1899999002849 is 9482009999981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1882823065600 + 17175937249 = 1372160^2 + 131057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1899999002849 - 2³⁶ = 1831279526113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1899999002849.

It is not a weakly prime, because it can be changed into another prime (1899999002819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949999501424 + 949999501425.

It is an arithmetic number, because the mean of its divisors is an integer number (949999501425).

Almost surely, 2^{1899999002849} is an apocalyptic number.

It is an amenable number.

1899999002849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1899999002849 is an equidigital number, since it uses as much as digits as its factorization.

1899999002849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272097792, while the sum is 77.

The spelling of 1899999002849 in words is "one trillion, eight hundred ninety-nine billion, nine hundred ninety-nine million, two thousand, eight hundred forty-nine".