19820908903 has 2 divisors, whose sum is σ = 19820908904. Its totient is φ = 19820908902.

The previous prime is 19820908883. The next prime is 19820908969. The reversal of 19820908903 is 30980902891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19820908903 - 2¹⁷ = 19820777831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19820908993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9910454451 + 9910454452.

It is an arithmetic number, because the mean of its divisors is an integer number (9910454452).

Almost surely, 2^19820908903 is an apocalyptic number.

19820908903 is a deficient number, since it is larger than the sum of its proper divisors (1).

19820908903 is an equidigital number, since it uses as much as digits as its factorization.

19820908903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 19820908903 in words is "nineteen billion, eight hundred twenty million, nine hundred eight thousand, nine hundred three".