19819014 has 16 divisors (see below), whose sum is σ = 41724480. Its totient is φ = 6258600.

The previous prime is 19819003. The next prime is 19819027. The reversal of 19819014 is 41091891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86812 + ... + 87039.

It is an arithmetic number, because the mean of its divisors is an integer number (2607780).

Almost surely, 2^19819014 is an apocalyptic number.

19819014 is an abundant number, since it is smaller than the sum of its proper divisors (21905466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19819014 is a wasteful number, since it uses less digits than its factorization.

19819014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173875.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 19819014 is about 4451.8551189364. The cubic root of 19819014 is about 270.6204933761.

The spelling of 19819014 in words is "nineteen million, eight hundred nineteen thousand, fourteen".