18959396827 has 8 divisors (see below), whose sum is σ = 21741836256. Its totient is φ = 16195445952.

The previous prime is 18959396809. The next prime is 18959396843. The reversal of 18959396827 is 72869395981.

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

It is a de Polignac number, because none of the positive numbers 2^k-18959396827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18959396887) 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, 4619938 + ... + 4624039.

It is an arithmetic number, because the mean of its divisors is an integer number (2717729532).

Almost surely, 2^18959396827 is an apocalyptic number.

18959396827 is a deficient number, since it is larger than the sum of its proper divisors (2782439429).

18959396827 is an equidigital number, since it uses as much as digits as its factorization.

18959396827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244277.

The product of its digits is 58786560, while the sum is 67.

The spelling of 18959396827 in words is "eighteen billion, nine hundred fifty-nine million, three hundred ninety-six thousand, eight hundred twenty-seven".