19198897703 has 2 divisors, whose sum is σ = 19198897704. Its totient is φ = 19198897702.

The previous prime is 19198897673. The next prime is 19198897717. The reversal of 19198897703 is 30779889191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19198897703 - 2¹² = 19198893607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19198897733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9599448851 + 9599448852.

It is an arithmetic number, because the mean of its divisors is an integer number (9599448852).

Almost surely, 2^19198897703 is an apocalyptic number.

19198897703 is a deficient number, since it is larger than the sum of its proper divisors (1).

19198897703 is an equidigital number, since it uses as much as digits as its factorization.

19198897703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 62.

The spelling of 19198897703 in words is "nineteen billion, one hundred ninety-eight million, eight hundred ninety-seven thousand, seven hundred three".