19983081 has 8 divisors (see below), whose sum is σ = 26943840. Its totient is φ = 13172192.

The previous prime is 19983077. The next prime is 19983091. The reversal of 19983081 is 18038991.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19983081 - 2² = 19983077 is a prime.

It is a super-2 number, since 2×19983081² = 798647052505122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19983011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37155 + ... + 37688.

It is an arithmetic number, because the mean of its divisors is an integer number (3367980).

Almost surely, 2^19983081 is an apocalyptic number.

It is an amenable number.

19983081 is a deficient number, since it is larger than the sum of its proper divisors (6960759).

19983081 is an equidigital number, since it uses as much as digits as its factorization.

19983081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74935.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 19983081 is about 4470.2439530746. The cubic root of 19983081 is about 271.3651980130.

The spelling of 19983081 in words is "nineteen million, nine hundred eighty-three thousand, eighty-one".