1091382850 has 48 divisors (see below), whose sum is σ = 2078474112. Its totient is φ = 426245760.

The previous prime is 1091382841. The next prime is 1091382863. The reversal of 1091382850 is 582831901.

It is a super-2 number, since 2×1091382850² = 2382233050548245000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374499 + ... + 377401.

It is an arithmetic number, because the mean of its divisors is an integer number (43301544).

Almost surely, 2^1091382850 is an apocalyptic number.

1091382850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1091382850 is a deficient number, since it is larger than the sum of its proper divisors (987091262).

1091382850 is a wasteful number, since it uses less digits than its factorization.

1091382850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091 (or 3086 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1091382850 is about 33036.0840597066. The cubic root of 1091382850 is about 1029.5774966168.

The spelling of 1091382850 in words is "one billion, ninety-one million, three hundred eighty-two thousand, eight hundred fifty".