1968899 has 2 divisors, whose sum is σ = 1968900. Its totient is φ = 1968898.

The previous prime is 1968871. The next prime is 1968919. The reversal of 1968899 is 9988691.

It is a strong prime.

It is an emirp because it is prime and its reverse (9988691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1968899 - 2²⁰ = 920323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1968829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984449 + 984450.

It is an arithmetic number, because the mean of its divisors is an integer number (984450).

2^1968899 is an apocalyptic number.

1968899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968899 is an equidigital number, since it uses as much as digits as its factorization.

1968899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 50.

The square root of 1968899 is about 1403.1746149357. The cubic root of 1968899 is about 125.3356101204.

The spelling of 1968899 in words is "one million, nine hundred sixty-eight thousand, eight hundred ninety-nine".