1093305444 has 144 divisors (see below), whose sum is σ = 3313449216. Its totient is φ = 277300800.

The previous prime is 1093305439. The next prime is 1093305457. The reversal of 1093305444 is 4445033901.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 276159 + ... + 280089.

It is an arithmetic number, because the mean of its divisors is an integer number (23010064).

Almost surely, 2^1093305444 is an apocalyptic number.

1093305444 is a gapful number since it is divisible by the number (14) 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 1093305444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656724608).

1093305444 is an abundant number, since it is smaller than the sum of its proper divisors (2220143772).

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

1093305444 is a wasteful number, since it uses less digits than its factorization.

1093305444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006 (or 3997 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1093305444 is about 33065.1696502528. The cubic root of 1093305444 is about 1030.1817142558.

The spelling of 1093305444 in words is "one billion, ninety-three million, three hundred five thousand, four hundred forty-four".