3671181 has 12 divisors (see below), whose sum is σ = 5432700. Its totient is φ = 2387520.

The previous prime is 3671179. The next prime is 3671183. The reversal of 3671181 is 1811763.

3671181 = 279² + 280² + ... + 319².

It is an interprime number because it is at equal distance from previous prime (3671179) and next prime (3671183).

It can be written as a sum of positive squares in 2 ways, for example, as 695556 + 2975625 = 834^2 + 1725^2 .

It is not a de Polignac number, because 3671181 - 2¹ = 3671179 is a prime.

It is a super-2 number, since 2×3671181² = 26955139869522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3671183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4606 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (452725).

Almost surely, 2^3671181 is an apocalyptic number.

It is an amenable number.

3671181 is a deficient number, since it is larger than the sum of its proper divisors (1761519).

3671181 is a wasteful number, since it uses less digits than its factorization.

3671181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996 (or 9993 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 3671181 is about 1916.0326197641. The cubic root of 3671181 is about 154.2654246541.

It can be divided in two parts, 36 and 71181, that added together give a palindrome (71217).

The spelling of 3671181 in words is "three million, six hundred seventy-one thousand, one hundred eighty-one".