3518181 has 8 divisors (see below), whose sum is σ = 5212160. Its totient is φ = 2345436.

The previous prime is 3518161. The next prime is 3518183. The reversal of 3518181 is 1818153.

It is not a de Polignac number, because 3518181 - 2⁶ = 3518117 is a prime.

It is a super-2 number, since 2×3518181² = 24755195097522, 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: 130303 = 3518181 / (3 + 5 + 1 + 8 + 1 + 8 + 1).

It is a Duffinian number.

3518181 is a modest number, since divided by 8181 gives 351 as remainder.

It is a Curzon number.

3518181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3518183) 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, 65125 + ... + 65178.

It is an arithmetic number, because the mean of its divisors is an integer number (651520).

Almost surely, 2^3518181 is an apocalyptic number.

It is an amenable number.

3518181 is a deficient number, since it is larger than the sum of its proper divisors (1693979).

3518181 is a wasteful number, since it uses less digits than its factorization.

3518181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130312 (or 130306 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 3518181 is about 1875.6814761574. The cubic root of 3518181 is about 152.0918909969.

The spelling of 3518181 in words is "three million, five hundred eighteen thousand, one hundred eighty-one".