19309982 has 8 divisors (see below), whose sum is σ = 29093256. Its totient is φ = 9612232.

The previous prime is 19309981. The next prime is 19310009. The reversal of 19309982 is 28990391.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19309981) 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 3 ways as a sum of consecutive naturals, for example, 20813 + ... + 21720.

It is an arithmetic number, because the mean of its divisors is an integer number (3636657).

Almost surely, 2^19309982 is an apocalyptic number.

19309982 is a deficient number, since it is larger than the sum of its proper divisors (9783274).

19309982 is a wasteful number, since it uses less digits than its factorization.

19309982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42762.

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

The square root of 19309982 is about 4394.3124604425. The cubic root of 19309982 is about 268.2834955815.

The spelling of 19309982 in words is "nineteen million, three hundred nine thousand, nine hundred eighty-two".