3894181 has 2 divisors, whose sum is σ = 3894182. Its totient is φ = 3894180.

The previous prime is 3894169. The next prime is 3894193. The reversal of 3894181 is 1814983.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (3894169) and next prime (3894193).

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 1285956 = 1615^2 + 1134^2 .

It is an emirp because it is prime and its reverse (1814983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3894181 - 2⁷ = 3894053 is a prime.

It is a super-2 number, since 2×3894181² = 30329291321522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3894101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1947090 + 1947091.

It is an arithmetic number, because the mean of its divisors is an integer number (1947091).

Almost surely, 2^3894181 is an apocalyptic number.

It is an amenable number.

3894181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3894181 is an equidigital number, since it uses as much as digits as its factorization.

3894181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 3894181 is about 1973.3679332552. The cubic root of 3894181 is about 157.3277667083.

Adding to 3894181 its product of digits (6912), we get a palindrome (3901093).

The spelling of 3894181 in words is "three million, eight hundred ninety-four thousand, one hundred eighty-one".