1830988779872 has 48 divisors (see below), whose sum is σ = 4122484867872. Its totient is φ = 784183741440.

The previous prime is 1830988779853. The next prime is 1830988779943. The reversal of 1830988779872 is 2789778890381.

It is a junction number, because it is equal to n+sod(n) for n = 1830988779793 and 1830988779802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403029 + ... + 3071892.

It is an arithmetic number, because the mean of its divisors is an integer number (85885101414).

Almost surely, 2^{1830988779872} is an apocalyptic number.

It is an amenable number.

1830988779872 is an abundant number, since it is smaller than the sum of its proper divisors (2291496088000).

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

1830988779872 is a wasteful number, since it uses less digits than its factorization.

1830988779872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476431 (or 5476423 counting only the distinct ones).

The product of its (nonzero) digits is 682795008, while the sum is 77.

The spelling of 1830988779872 in words is "one trillion, eight hundred thirty billion, nine hundred eighty-eight million, seven hundred seventy-nine thousand, eight hundred seventy-two".