1831326780 has 48 divisors (see below), whose sum is σ = 5397598080. Its totient is φ = 462650688.

The previous prime is 1831326779. The next prime is 1831326797. The reversal of 1831326780 is 876231381.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 802074 + ... + 804353.

It is an arithmetic number, because the mean of its divisors is an integer number (112449960).

Almost surely, 2^1831326780 is an apocalyptic number.

1831326780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1831326780 is an abundant number, since it is smaller than the sum of its proper divisors (3566271300).

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

1831326780 is a wasteful number, since it uses less digits than its factorization.

1831326780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606458 (or 1606456 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1831326780 is about 42794.0040192548. The cubic root of 1831326780 is about 1223.4567332567.

The spelling of 1831326780 in words is "one billion, eight hundred thirty-one million, three hundred twenty-six thousand, seven hundred eighty".