19313189399 has 4 divisors (see below), whose sum is σ = 22072216464. Its totient is φ = 16554162336.

The previous prime is 19313189393. The next prime is 19313189417. The reversal of 19313189399 is 99398131391.

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

It is a cyclic number.

It is not a de Polignac number, because 19313189399 - 2⁴ = 19313189383 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 (19313189393) 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, 1379513522 + ... + 1379513535.

It is an arithmetic number, because the mean of its divisors is an integer number (5518054116).

Almost surely, 2^19313189399 is an apocalyptic number.

19313189399 is a deficient number, since it is larger than the sum of its proper divisors (2759027065).

19313189399 is an equidigital number, since it uses as much as digits as its factorization.

19313189399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759027064.

The product of its digits is 1417176, while the sum is 56.

The spelling of 19313189399 in words is "nineteen billion, three hundred thirteen million, one hundred eighty-nine thousand, three hundred ninety-nine".