3680181 has 8 divisors (see below), whose sum is σ = 5452160. Its totient is φ = 2453436.

The previous prime is 3680153. The next prime is 3680203. The reversal of 3680181 is 1810863.

It is not a de Polignac number, because 3680181 - 2¹³ = 3671989 is a prime.

It is a super-2 number, since 2×3680181² = 27087464385522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 136303 = 3680181 / (3 + 6 + 8 + 0 + 1 + 8 + 1).

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 (3680101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68125 + ... + 68178.

It is an arithmetic number, because the mean of its divisors is an integer number (681520).

Almost surely, 2^3680181 is an apocalyptic number.

It is an amenable number.

3680181 is a deficient number, since it is larger than the sum of its proper divisors (1771979).

3680181 is a wasteful number, since it uses less digits than its factorization.

3680181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136312 (or 136306 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 3680181 is about 1918.3797851312. The cubic root of 3680181 is about 154.3913837398.

The spelling of 3680181 in words is "three million, six hundred eighty thousand, one hundred eighty-one".