19181818382 has 8 divisors (see below), whose sum is σ = 28848646200. Its totient is φ = 9565602984.

The previous prime is 19181818373. The next prime is 19181818393. The reversal of 19181818382 is 28381818191.

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

It is a self number, because there is not a number n which added to its sum of digits gives 19181818382.

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 in 3 ways as a sum of consecutive naturals, for example, 12652157 + ... + 12653672.

It is an arithmetic number, because the mean of its divisors is an integer number (3606080775).

Almost surely, 2^19181818382 is an apocalyptic number.

19181818382 is a deficient number, since it is larger than the sum of its proper divisors (9666827818).

19181818382 is a wasteful number, since it uses less digits than its factorization.

19181818382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25306210.

The product of its digits is 221184, while the sum is 50.

The spelling of 19181818382 in words is "nineteen billion, one hundred eighty-one million, eight hundred eighteen thousand, three hundred eighty-two".