1093805990 has 8 divisors (see below), whose sum is σ = 1968850800. Its totient is φ = 437522392.

The previous prime is 1093805989. The next prime is 1093806011. The reversal of 1093805990 is 995083901.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54690290 + ... + 54690309.

It is an arithmetic number, because the mean of its divisors is an integer number (246106350).

Almost surely, 2^1093805990 is an apocalyptic number.

1093805990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1093805990 is a deficient number, since it is larger than the sum of its proper divisors (875044810).

1093805990 is a wasteful number, since it uses less digits than its factorization.

1093805990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109380606.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 1093805990 is about 33072.7378667083. The cubic root of 1093805990 is about 1030.3389056627.

The spelling of 1093805990 in words is "one billion, ninety-three million, eight hundred five thousand, nine hundred ninety".