19850063918 has 8 divisors (see below), whose sum is σ = 30579828312. Its totient is φ = 9656787816.

The previous prime is 19850063903. The next prime is 19850063921. The reversal of 19850063918 is 81936005891.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134121980 + ... + 134122127.

It is an arithmetic number, because the mean of its divisors is an integer number (3822478539).

Almost surely, 2^19850063918 is an apocalyptic number.

19850063918 is a deficient number, since it is larger than the sum of its proper divisors (10729764394).

19850063918 is a wasteful number, since it uses less digits than its factorization.

19850063918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268244146.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 19850063918 in words is "nineteen billion, eight hundred fifty million, sixty-three thousand, nine hundred eighteen".