19854855050 has 24 divisors (see below), whose sum is σ = 39102386796. Its totient is φ = 7474768640.

The previous prime is 19854855001. The next prime is 19854855061. The reversal of 19854855050 is 5055845891.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3008632201 + 16846222849 = 54851^2 + 129793^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 19854855050.

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 11 ways as a sum of consecutive naturals, for example, 11678477 + ... + 11680176.

Almost surely, 2^19854855050 is an apocalyptic number.

19854855050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19854855050 is a deficient number, since it is larger than the sum of its proper divisors (19247531746).

19854855050 is a wasteful number, since it uses less digits than its factorization.

19854855050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23358682 (or 23358677 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 50.

The spelling of 19854855050 in words is "nineteen billion, eight hundred fifty-four million, eight hundred fifty-five thousand, fifty".