19139499699 has 8 divisors (see below), whose sum is σ = 25523247552. Its totient is φ = 12757709160.

The previous prime is 19139499689. The next prime is 19139499713. The reversal of 19139499699 is 99699493191.

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

It is not a de Polignac number, because 19139499699 - 2⁷ = 19139499571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19139499689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466357 + ... + 505734.

It is an arithmetic number, because the mean of its divisors is an integer number (3190405944).

Almost surely, 2^19139499699 is an apocalyptic number.

19139499699 is a deficient number, since it is larger than the sum of its proper divisors (6383747853).

19139499699 is an equidigital number, since it uses as much as digits as its factorization.

19139499699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978657.

The product of its digits is 38263752, while the sum is 69.

The spelling of 19139499699 in words is "nineteen billion, one hundred thirty-nine million, four hundred ninety-nine thousand, six hundred ninety-nine".