19905007014 has 32 divisors (see below), whose sum is σ = 44556236640. Its totient is φ = 6586569216.

The previous prime is 19905007013. The next prime is 19905007027. The reversal of 19905007014 is 41070050991.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19905007014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19905007013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1337899 + ... + 1352694.

It is an arithmetic number, because the mean of its divisors is an integer number (1392382395).

Almost surely, 2^19905007014 is an apocalyptic number.

19905007014 is an abundant number, since it is smaller than the sum of its proper divisors (24651229626).

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

19905007014 is a wasteful number, since it uses less digits than its factorization.

19905007014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690741 (or 2690735 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 19905007014 in words is "nineteen billion, nine hundred five million, seven thousand, fourteen".