1821795366 has 8 divisors (see below), whose sum is σ = 3643590744. Its totient is φ = 607265120.

The previous prime is 1821795347. The next prime is 1821795403. The reversal of 1821795366 is 6635971281.

It is a sphenic number, since it is the product of 3 distinct primes.

1821795366 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151816275 + ... + 151816286.

It is an arithmetic number, because the mean of its divisors is an integer number (455448843).

Almost surely, 2^1821795366 is an apocalyptic number.

1821795366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1821795366 is a wasteful number, since it uses less digits than its factorization.

1821795366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303632566.

The product of its digits is 544320, while the sum is 48.

The square root of 1821795366 is about 42682.4948427338. The cubic root of 1821795366 is about 1221.3304856986.

The spelling of 1821795366 in words is "one billion, eight hundred twenty-one million, seven hundred ninety-five thousand, three hundred sixty-six".