2133869 has 4 divisors (see below), whose sum is σ = 2160960. Its totient is φ = 2106780.

The previous prime is 2133839. The next prime is 2133899. The reversal of 2133869 is 9683312.

2133869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2133839) and next prime (2133899).

It is a cyclic number.

It is not a de Polignac number, because 2133869 - 2⁸ = 2133613 is a prime.

It is a super-2 number, since 2×2133869² = 9106793818322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133839) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13427 + ... + 13584.

It is an arithmetic number, because the mean of its divisors is an integer number (540240).

2^2133869 is an apocalyptic number.

It is an amenable number.

2133869 is a deficient number, since it is larger than the sum of its proper divisors (27091).

2133869 is an equidigital number, since it uses as much as digits as its factorization.

2133869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27090.

The product of its digits is 7776, while the sum is 32.

The square root of 2133869 is about 1460.7768481188. The cubic root of 2133869 is about 128.7426916391.

The spelling of 2133869 in words is "two million, one hundred thirty-three thousand, eight hundred sixty-nine".