4181481 has 24 divisors (see below), whose sum is σ = 6431880. Its totient is φ = 2612736.

The previous prime is 4181479. The next prime is 4181483. The reversal of 4181481 is 1841814.

4181481 is a `hidden beast` number, since 4 + 181 + 481 = 666.

It is an interprime number because it is at equal distance from previous prime (4181479) and next prime (4181483).

It can be written as a sum of positive squares in 4 ways, for example, as 665856 + 3515625 = 816^2 + 1875^2 .

It is not a de Polignac number, because 4181481 - 2¹ = 4181479 is a prime.

It is a super-2 number, since 2×4181481² = 34969566706722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4181483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9441 + ... + 9873.

It is an arithmetic number, because the mean of its divisors is an integer number (267995).

Almost surely, 2^4181481 is an apocalyptic number.

It is an amenable number.

4181481 is a deficient number, since it is larger than the sum of its proper divisors (2250399).

4181481 is a wasteful number, since it uses less digits than its factorization.

4181481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 502 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 4181481 is about 2044.8669883393. The cubic root of 4181481 is about 161.1053796173.

The spelling of 4181481 in words is "four million, one hundred eighty-one thousand, four hundred eighty-one".