19691414197 has 32 divisors (see below), whose sum is σ = 24891068160. Its totient is φ = 15163891200.

The previous prime is 19691414191. The next prime is 19691414213. The reversal of 19691414197 is 79141419691.

It is a cyclic number.

It is not a de Polignac number, because 19691414197 - 2¹¹ = 19691412149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19691414191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 524113 + ... + 560425.

It is an arithmetic number, because the mean of its divisors is an integer number (777845880).

Almost surely, 2^19691414197 is an apocalyptic number.

It is an amenable number.

19691414197 is a deficient number, since it is larger than the sum of its proper divisors (5199653963).

19691414197 is a wasteful number, since it uses less digits than its factorization.

19691414197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36493.

The product of its digits is 489888, while the sum is 52.

The spelling of 19691414197 in words is "nineteen billion, six hundred ninety-one million, four hundred fourteen thousand, one hundred ninety-seven".