11890165 has 16 divisors (see below), whose sum is σ = 16507008. Its totient is φ = 8053056.

The previous prime is 11890159. The next prime is 11890169. The reversal of 11890165 is 56109811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11890165 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11890169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859 + ... + 4951.

It is an arithmetic number, because the mean of its divisors is an integer number (1031688).

Almost surely, 2^11890165 is an apocalyptic number.

It is an amenable number.

11890165 is a deficient number, since it is larger than the sum of its proper divisors (4616843).

11890165 is an equidigital number, since it uses as much as digits as its factorization.

11890165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4188.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 11890165 is about 3448.2118554404. The cubic root of 11890165 is about 228.2422082375.

Adding to 11890165 its reverse (56109811), we get a palindrome (67999976).

The spelling of 11890165 in words is "eleven million, eight hundred ninety thousand, one hundred sixty-five".