4785181 has 2 divisors, whose sum is σ = 4785182. Its totient is φ = 4785180.

The previous prime is 4785161. The next prime is 4785197. The reversal of 4785181 is 1815874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4137156 + 648025 = 2034^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 4785181 - 2⁹ = 4784669 is a prime.

It is a super-2 number, since 2×4785181² = 45795914405522, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4785101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2392590 + 2392591.

It is an arithmetic number, because the mean of its divisors is an integer number (2392591).

Almost surely, 2^4785181 is an apocalyptic number.

4785181 is the 1384-th centered pentagonal number.

It is an amenable number.

4785181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4785181 is an equidigital number, since it uses as much as digits as its factorization.

4785181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 34.

The square root of 4785181 is about 2187.5056571355. The cubic root of 4785181 is about 168.5127592647.

The spelling of 4785181 in words is "four million, seven hundred eighty-five thousand, one hundred eighty-one".