19942002863 has 4 divisors (see below), whose sum is σ = 19943469768. Its totient is φ = 19940535960.

The previous prime is 19942002853. The next prime is 19942002893. The reversal of 19942002863 is 36820024991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36820024991 = 17 ⋅2165883823.

It is a cyclic number.

It is not a de Polignac number, because 19942002863 - 2⁸ = 19942002607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19942002853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712868 + ... + 740313.

It is an arithmetic number, because the mean of its divisors is an integer number (4985867442).

Almost surely, 2^19942002863 is an apocalyptic number.

19942002863 is a deficient number, since it is larger than the sum of its proper divisors (1466905).

19942002863 is a wasteful number, since it uses less digits than its factorization.

19942002863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466904.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 19942002863 in words is "nineteen billion, nine hundred forty-two million, two thousand, eight hundred sixty-three".