19787300859 has 4 divisors (see below), whose sum is σ = 26383067816. Its totient is φ = 13191533904.

The previous prime is 19787300849. The next prime is 19787300917. The reversal of 19787300859 is 95800378791.

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

It is not a de Polignac number, because 19787300859 - 2²⁸ = 19518865403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19787300799 and 19787300808.

It is not an unprimeable number, because it can be changed into a prime (19787300839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3297883474 + ... + 3297883479.

It is an arithmetic number, because the mean of its divisors is an integer number (6595766954).

Almost surely, 2^19787300859 is an apocalyptic number.

19787300859 is a deficient number, since it is larger than the sum of its proper divisors (6595766957).

19787300859 is an equidigital number, since it uses as much as digits as its factorization.

19787300859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6595766956.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The spelling of 19787300859 in words is "nineteen billion, seven hundred eighty-seven million, three hundred thousand, eight hundred fifty-nine".