19213197999 has 8 divisors (see below), whose sum is σ = 26037558192. Its totient is φ = 12598818240.

The previous prime is 19213197973. The next prime is 19213198021. The reversal of 19213197999 is 99979131291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19213197999 - 2⁸ = 19213197743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19213197929) 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 7 ways as a sum of consecutive naturals, for example, 52494894 + ... + 52495259.

It is an arithmetic number, because the mean of its divisors is an integer number (3254694774).

Almost surely, 2^19213197999 is an apocalyptic number.

19213197999 is a deficient number, since it is larger than the sum of its proper divisors (6824360193).

19213197999 is a wasteful number, since it uses less digits than its factorization.

19213197999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104990217.

The product of its digits is 2480058, while the sum is 60.

The spelling of 19213197999 in words is "nineteen billion, two hundred thirteen million, one hundred ninety-seven thousand, nine hundred ninety-nine".