19640149199 has 8 divisors (see below), whose sum is σ = 21776857680. Its totient is φ = 17561980800.

The previous prime is 19640149153. The next prime is 19640149201. The reversal of 19640149199 is 99194104691.

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

It is a cyclic number.

It is not a de Polignac number, because 19640149199 - 2²⁰ = 19639100623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19640149199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19640146199) 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, 14634314 + ... + 14635655.

It is an arithmetic number, because the mean of its divisors is an integer number (2722107210).

Almost surely, 2^19640149199 is an apocalyptic number.

19640149199 is a deficient number, since it is larger than the sum of its proper divisors (2136708481).

19640149199 is a wasteful number, since it uses less digits than its factorization.

19640149199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29270041.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 19640149199 in words is "nineteen billion, six hundred forty million, one hundred forty-nine thousand, one hundred ninety-nine".