1819838032820 has 48 divisors (see below), whose sum is σ = 3837102487680. Its totient is φ = 724999061376.

The previous prime is 1819838032781. The next prime is 1819838032847. The reversal of 1819838032820 is 282308389181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5347889 + ... + 5677991.

It is an arithmetic number, because the mean of its divisors is an integer number (79939635160).

Almost surely, 2^{1819838032820} is an apocalyptic number.

1819838032820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1819838032820 is an abundant number, since it is smaller than the sum of its proper divisors (2017264454860).

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

1819838032820 is a wasteful number, since it uses less digits than its factorization.

1819838032820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331224 (or 331222 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 53.

The spelling of 1819838032820 in words is "one trillion, eight hundred nineteen billion, eight hundred thirty-eight million, thirty-two thousand, eight hundred twenty".