19918375382 has 4 divisors (see below), whose sum is σ = 29877563076. Its totient is φ = 9959187690.

The previous prime is 19918375357. The next prime is 19918375391. The reversal of 19918375382 is 28357381991.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979593844 + ... + 4979593847.

It is an arithmetic number, because the mean of its divisors is an integer number (7469390769).

Almost surely, 2^19918375382 is an apocalyptic number.

19918375382 is a deficient number, since it is larger than the sum of its proper divisors (9959187694).

19918375382 is an equidigital number, since it uses as much as digits as its factorization.

19918375382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959187693.

The product of its digits is 3265920, while the sum is 56.

The spelling of 19918375382 in words is "nineteen billion, nine hundred eighteen million, three hundred seventy-five thousand, three hundred eighty-two".