1819984994832 has 80 divisors (see below), whose sum is σ = 4906444717440. Its totient is φ = 580237971456.

The previous prime is 1819984994797. The next prime is 1819984994833. The reversal of 1819984994832 is 2384994899181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1819984994833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15096778 + ... + 15216854.

It is an arithmetic number, because the mean of its divisors is an integer number (61330558968).

Almost surely, 2^{1819984994832} is an apocalyptic number.

1819984994832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1819984994832 is an abundant number, since it is smaller than the sum of its proper divisors (3086459722608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1819984994832 is a wasteful number, since it uses less digits than its factorization.

1819984994832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133840 (or 133834 counting only the distinct ones).

The product of its digits is 322486272, while the sum is 75.

The spelling of 1819984994832 in words is "one trillion, eight hundred nineteen billion, nine hundred eighty-four million, nine hundred ninety-four thousand, eight hundred thirty-two".