1091823036 has 12 divisors (see below), whose sum is σ = 2547587112. Its totient is φ = 363941008.

The previous prime is 1091823017. The next prime is 1091823067. The reversal of 1091823036 is 6303281901.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1091822988 and 1091823006.

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, 45492615 + ... + 45492638.

It is an arithmetic number, because the mean of its divisors is an integer number (212298926).

Almost surely, 2^1091823036 is an apocalyptic number.

It is an amenable number.

1091823036 is an abundant number, since it is smaller than the sum of its proper divisors (1455764076).

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

1091823036 is a wasteful number, since it uses less digits than its factorization.

1091823036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90985260 (or 90985258 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1091823036 is about 33042.7455881015. The cubic root of 1091823036 is about 1029.7158973877.

The spelling of 1091823036 in words is "one billion, ninety-one million, eight hundred twenty-three thousand, thirty-six".