2081819320 has 64 divisors (see below), whose sum is σ = 5668159680. Its totient is φ = 671778816.

The previous prime is 2081819287. The next prime is 2081819357. The reversal of 2081819320 is 239181802.

It is a super-2 number, since 2×2081819320² = 8667943362250524800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 213919 + ... + 223438.

It is an arithmetic number, because the mean of its divisors is an integer number (88564995).

Almost surely, 2^2081819320 is an apocalyptic number.

2081819320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081819320 is an abundant number, since it is smaller than the sum of its proper divisors (3586340360).

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

2081819320 is a wasteful number, since it uses less digits than its factorization.

2081819320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437392 (or 437388 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2081819320 is about 45626.9582593449. The cubic root of 2081819320 is about 1276.8729249595.

The spelling of 2081819320 in words is "two billion, eighty-one million, eight hundred nineteen thousand, three hundred twenty".