18869910782 has 8 divisors (see below), whose sum is σ = 28431794496. Its totient is φ = 9392645952.

The previous prime is 18869910779. The next prime is 18869910803. The reversal of 18869910782 is 28701996881.

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

It is a congruent number.

It is an unprimeable number.

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, 21154163 + ... + 21155054.

It is an arithmetic number, because the mean of its divisors is an integer number (3553974312).

Almost surely, 2^18869910782 is an apocalyptic number.

18869910782 is a deficient number, since it is larger than the sum of its proper divisors (9561883714).

18869910782 is a wasteful number, since it uses less digits than its factorization.

18869910782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42309442.

The product of its (nonzero) digits is 3483648, while the sum is 59.

The spelling of 18869910782 in words is "eighteen billion, eight hundred sixty-nine million, nine hundred ten thousand, seven hundred eighty-two".