19940704026 has 16 divisors (see below), whose sum is σ = 39891205728. Its totient is φ = 6645268400.

The previous prime is 19940704009. The next prime is 19940704031. The reversal of 19940704026 is 62040704991.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381645 + ... + 430736.

It is an arithmetic number, because the mean of its divisors is an integer number (2493200358).

Almost surely, 2^19940704026 is an apocalyptic number.

19940704026 is an abundant number, since it is smaller than the sum of its proper divisors (19950501702).

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

19940704026 is a wasteful number, since it uses less digits than its factorization.

19940704026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816477.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 19940704026 in words is "nineteen billion, nine hundred forty million, seven hundred four thousand, twenty-six".