3611869 has 2 divisors, whose sum is σ = 3611870. Its totient is φ = 3611868.

The previous prime is 3611849. The next prime is 3611873. The reversal of 3611869 is 9681163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3286969 + 324900 = 1813^2 + 570^2 .

It is an emirp because it is prime and its reverse (9681163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3611869 - 2¹¹ = 3609821 is a prime.

It is a super-2 number, since 2×3611869² = 26091195346322, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3611849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805934 + 1805935.

It is an arithmetic number, because the mean of its divisors is an integer number (1805935).

Almost surely, 2^3611869 is an apocalyptic number.

It is an amenable number.

3611869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3611869 is an equidigital number, since it uses as much as digits as its factorization.

3611869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 3611869 is about 1900.4917784616. The cubic root of 3611869 is about 153.4301336884.

The spelling of 3611869 in words is "three million, six hundred eleven thousand, eight hundred sixty-nine".