11641869 has 6 divisors (see below), whose sum is σ = 16816046. Its totient is φ = 7761240.

The previous prime is 11641867. The next prime is 11641871. The reversal of 11641869 is 96814611.

It is a happy number.

11641869 is a `hidden beast` number, since 1 + 1 + 641 + 8 + 6 + 9 = 666.

11641869 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11641867) and next prime (11641871).

It can be written as a sum of positive squares in only one way, i.e., 11492100 + 149769 = 3390^2 + 387^2 .

It is not a de Polignac number, because 11641869 - 2¹ = 11641867 is a prime.

It is a super-2 number, since 2×11641869² = 271066227626322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 646762 + ... + 646779.

Almost surely, 2^11641869 is an apocalyptic number.

It is an amenable number.

11641869 is a deficient number, since it is larger than the sum of its proper divisors (5174177).

11641869 is a wasteful number, since it uses less digits than its factorization.

11641869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293547 (or 1293544 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 11641869 is about 3412.0183176531. The cubic root of 11641869 is about 226.6422654913.

The spelling of 11641869 in words is "eleven million, six hundred forty-one thousand, eight hundred sixty-nine".