19982093 has 2 divisors, whose sum is σ = 19982094. Its totient is φ = 19982092.

The previous prime is 19982069. The next prime is 19982099. The reversal of 19982093 is 39028991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13520329 + 6461764 = 3677^2 + 2542^2 .

It is a cyclic number.

It is not a de Polignac number, because 19982093 - 2⁶ = 19982029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19982093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19982099) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991046 + 9991047.

It is an arithmetic number, because the mean of its divisors is an integer number (9991047).

Almost surely, 2^19982093 is an apocalyptic number.

It is an amenable number.

19982093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19982093 is an equidigital number, since it uses as much as digits as its factorization.

19982093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 19982093 is about 4470.1334431983. The cubic root of 19982093 is about 271.3607256757.

It can be divided in two parts, 1998 and 2093, that multiplied together give a palindrome (4181814).

The spelling of 19982093 in words is "nineteen million, nine hundred eighty-two thousand, ninety-three".