1899983 has 2 divisors, whose sum is σ = 1899984. Its totient is φ = 1899982.

The previous prime is 1899949. The next prime is 1900009. The reversal of 1899983 is 3899981.

1899983 is nontrivially palindromic in base 8.

It is a strong prime.

It is an emirp because it is prime and its reverse (3899981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1899983 - 2¹⁰ = 1898959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1899923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949991 + 949992.

It is an arithmetic number, because the mean of its divisors is an integer number (949992).

2^1899983 is an apocalyptic number.

1899983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1899983 is an equidigital number, since it uses as much as digits as its factorization.

1899983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 47.

The square root of 1899983 is about 1378.3987086471. The cubic root of 1899983 is about 123.8558635661.

It can be divided in two parts, 1899 and 983, that added together give a palindrome (2882).

The spelling of 1899983 in words is "one million, eight hundred ninety-nine thousand, nine hundred eighty-three".