19853018318 has 8 divisors (see below), whose sum is σ = 34033745712. Its totient is φ = 8508436416.

The previous prime is 19853018309. The next prime is 19853018321. The reversal of 19853018318 is 81381035891.

It is a happy number.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709036355 + ... + 709036382.

It is an arithmetic number, because the mean of its divisors is an integer number (4254218214).

Almost surely, 2^19853018318 is an apocalyptic number.

19853018318 is a deficient number, since it is larger than the sum of its proper divisors (14180727394).

19853018318 is a wasteful number, since it uses less digits than its factorization.

19853018318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418072746.

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 19853018318 in words is "nineteen billion, eight hundred fifty-three million, eighteen thousand, three hundred eighteen".