2183121091 has 8 divisors (see below), whose sum is σ = 2276779904. Its totient is φ = 2090914560.

The previous prime is 2183121077. The next prime is 2183121121. The reversal of 2183121091 is 1901213812.

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

It is a cyclic number.

It is not a de Polignac number, because 2183121091 - 2⁷ = 2183120963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2183121991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360000 + ... + 366013.

It is an arithmetic number, because the mean of its divisors is an integer number (284597488).

Almost surely, 2^2183121091 is an apocalyptic number.

2183121091 is a deficient number, since it is larger than the sum of its proper divisors (93658813).

2183121091 is an equidigital number, since it uses as much as digits as its factorization.

2183121091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726141.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 2183121091 is about 46723.8813777280. The cubic root of 2183121091 is about 1297.2567579237.

The spelling of 2183121091 in words is "two billion, one hundred eighty-three million, one hundred twenty-one thousand, ninety-one".