19484568818 has 256 divisors, whose sum is σ = 40131624960. Its totient is φ = 6951225600.

The previous prime is 19484568809. The next prime is 19484568839. The reversal of 19484568818 is 81886548491.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a Curzon 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 127 ways as a sum of consecutive naturals, for example, 182098721 + ... + 182098827.

It is an arithmetic number, because the mean of its divisors is an integer number (156764160).

Almost surely, 2^19484568818 is an apocalyptic number.

19484568818 is an abundant number, since it is smaller than the sum of its proper divisors (20647056142).

19484568818 is a wasteful number, since it uses less digits than its factorization.

19484568818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its digits is 17694720, while the sum is 62.

The spelling of 19484568818 in words is "nineteen billion, four hundred eighty-four million, five hundred sixty-eight thousand, eight hundred eighteen".