1093394820 has 96 divisors (see below), whose sum is σ = 3570336000. Its totient is φ = 249914112.

The previous prime is 1093394789. The next prime is 1093394837. The reversal of 1093394820 is 284933901.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5985 + ... + 47144.

It is an arithmetic number, because the mean of its divisors is an integer number (37191000).

Almost surely, 2^1093394820 is an apocalyptic number.

1093394820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1093394820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1785168000).

1093394820 is an abundant number, since it is smaller than the sum of its proper divisors (2476941180).

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

1093394820 is a wasteful number, since it uses less digits than its factorization.

1093394820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53162 (or 53146 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1093394820 is about 33066.5211354324. The cubic root of 1093394820 is about 1030.2097854024.

The spelling of 1093394820 in words is "one billion, ninety-three million, three hundred ninety-four thousand, eight hundred twenty".