2091033823 has 4 divisors (see below), whose sum is σ = 2125313128. Its totient is φ = 2056754520.

The previous prime is 2091033821. The next prime is 2091033829. The reversal of 2091033823 is 3283301902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2091033823 - 2¹ = 2091033821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091033821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17139561 + ... + 17139682.

It is an arithmetic number, because the mean of its divisors is an integer number (531328282).

Almost surely, 2^2091033823 is an apocalyptic number.

2091033823 is a deficient number, since it is larger than the sum of its proper divisors (34279305).

2091033823 is an equidigital number, since it uses as much as digits as its factorization.

2091033823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34279304.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 2091033823 is about 45727.8232917334. The cubic root of 2091033823 is about 1278.7540412736.

The spelling of 2091033823 in words is "two billion, ninety-one million, thirty-three thousand, eight hundred twenty-three".