19399386931199 has 4 divisors (see below), whose sum is σ = 21162967561320. Its totient is φ = 17635806301080.

The previous prime is 19399386931193. The next prime is 19399386931201. The reversal of 19399386931199 is 99113968399391.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19399386931199 - 2³⁶ = 19330667454463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19399386931193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881790315044 + ... + 881790315065.

It is an arithmetic number, because the mean of its divisors is an integer number (5290741890330).

Almost surely, 2^{19399386931199} is an apocalyptic number.

19399386931199 is a deficient number, since it is larger than the sum of its proper divisors (1763580630121).

19399386931199 is a wasteful number, since it uses less digits than its factorization.

19399386931199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763580630120.

The product of its digits is 688747536, while the sum is 80.

The spelling of 19399386931199 in words is "nineteen trillion, three hundred ninety-nine billion, three hundred eighty-six million, nine hundred thirty-one thousand, one hundred ninety-nine".