19982291 has 8 divisors (see below), whose sum is σ = 23073120. Its totient is φ = 16950528.

The previous prime is 19982279. The next prime is 19982317. The reversal of 19982291 is 19228991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-19982291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19982251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14036 + ... + 15393.

It is an arithmetic number, because the mean of its divisors is an integer number (2884140).

Almost surely, 2^19982291 is an apocalyptic number.

19982291 is a deficient number, since it is larger than the sum of its proper divisors (3090829).

19982291 is an equidigital number, since it uses as much as digits as its factorization.

19982291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29533.

The product of its digits is 23328, while the sum is 41.

The square root of 19982291 is about 4470.1555901333. The cubic root of 19982291 is about 271.3616219656.

The spelling of 19982291 in words is "nineteen million, nine hundred eighty-two thousand, two hundred ninety-one".