11161889 has 4 divisors (see below), whose sum is σ = 11399424. Its totient is φ = 10924356.

The previous prime is 11161879. The next prime is 11161907. The reversal of 11161889 is 98816111.

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 a cyclic number.

It is not a de Polignac number, because 11161889 - 2¹² = 11157793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11161859) 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, 118697 + ... + 118790.

It is an arithmetic number, because the mean of its divisors is an integer number (2849856).

Almost surely, 2^11161889 is an apocalyptic number.

It is an amenable number.

11161889 is a deficient number, since it is larger than the sum of its proper divisors (237535).

11161889 is an equidigital number, since it uses as much as digits as its factorization.

11161889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237534.

The product of its digits is 3456, while the sum is 35.

The square root of 11161889 is about 3340.9413344146. The cubic root of 11161889 is about 223.4837241058.

The spelling of 11161889 in words is "eleven million, one hundred sixty-one thousand, eight hundred eighty-nine".