19629403903 has 2 divisors, whose sum is σ = 19629403904. Its totient is φ = 19629403902.

The previous prime is 19629403897. The next prime is 19629403919. The reversal of 19629403903 is 30930492691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19629403903 is a prime.

It is a super-2 number, since 2×19629403903² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19629403403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9814701951 + 9814701952.

It is an arithmetic number, because the mean of its divisors is an integer number (9814701952).

Almost surely, 2^19629403903 is an apocalyptic number.

19629403903 is a deficient number, since it is larger than the sum of its proper divisors (1).

19629403903 is an equidigital number, since it uses as much as digits as its factorization.

19629403903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 19629403903 in words is "nineteen billion, six hundred twenty-nine million, four hundred three thousand, nine hundred three".