4186381 has 2 divisors, whose sum is σ = 4186382. Its totient is φ = 4186380.

The previous prime is 4186339. The next prime is 4186393. The reversal of 4186381 is 1836814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4182025 + 4356 = 2045^2 + 66^2 .

It is a cyclic number.

It is not a de Polignac number, because 4186381 - 2⁹ = 4185869 is a prime.

It is a super-2 number, since 2×4186381² = 35051571754322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4186181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2093190 + 2093191.

It is an arithmetic number, because the mean of its divisors is an integer number (2093191).

Almost surely, 2^4186381 is an apocalyptic number.

It is an amenable number.

4186381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4186381 is an equidigital number, since it uses as much as digits as its factorization.

4186381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 4186381 is about 2046.0647594834. The cubic root of 4186381 is about 161.1682846188.

The spelling of 4186381 in words is "four million, one hundred eighty-six thousand, three hundred eighty-one".