19982263 has 4 divisors (see below), whose sum is σ = 22836880. Its totient is φ = 17127648.

The previous prime is 19982251. The next prime is 19982267. The reversal of 19982263 is 36228991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19982263 - 2²¹ = 17885111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19982267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427298 + ... + 1427311.

It is an arithmetic number, because the mean of its divisors is an integer number (5709220).

Almost surely, 2^19982263 is an apocalyptic number.

19982263 is a deficient number, since it is larger than the sum of its proper divisors (2854617).

19982263 is an equidigital number, since it uses as much as digits as its factorization.

19982263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854616.

The product of its digits is 46656, while the sum is 40.

The square root of 19982263 is about 4470.1524582502. The cubic root of 19982263 is about 271.3614952179.

The spelling of 19982263 in words is "nineteen million, nine hundred eighty-two thousand, two hundred sixty-three".