19802063803 has 2 divisors, whose sum is σ = 19802063804. Its totient is φ = 19802063802.

The previous prime is 19802063789. The next prime is 19802063833. The reversal of 19802063803 is 30836020891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19802063803 - 2²¹ = 19799966651 is a prime.

It is not a weakly prime, because it can be changed into another prime (19802063833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9901031901 + 9901031902.

It is an arithmetic number, because the mean of its divisors is an integer number (9901031902).

Almost surely, 2^19802063803 is an apocalyptic number.

19802063803 is a deficient number, since it is larger than the sum of its proper divisors (1).

19802063803 is an equidigital number, since it uses as much as digits as its factorization.

19802063803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 19802063803 in words is "nineteen billion, eight hundred two million, sixty-three thousand, eight hundred three".