199812383 has 2 divisors, whose sum is σ = 199812384. Its totient is φ = 199812382.

The previous prime is 199812359. The next prime is 199812397. The reversal of 199812383 is 383218991.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199812383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199812323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99906191 + 99906192.

It is an arithmetic number, because the mean of its divisors is an integer number (99906192).

Almost surely, 2^199812383 is an apocalyptic number.

199812383 is a deficient number, since it is larger than the sum of its proper divisors (1).

199812383 is an equidigital number, since it uses as much as digits as its factorization.

199812383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 44.

The square root of 199812383 is about 14135.5008047115. The cubic root of 199812383 is about 584.6206252864.

The spelling of 199812383 in words is "one hundred ninety-nine million, eight hundred twelve thousand, three hundred eighty-three".