4136381 has 2 divisors, whose sum is σ = 4136382. Its totient is φ = 4136380.

The previous prime is 4136369. The next prime is 4136383. The reversal of 4136381 is 1836314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2859481 + 1276900 = 1691^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 4136381 - 2⁶ = 4136317 is a prime.

It is a super-2 number, since 2×4136381² = 34219295554322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 4136383, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4136381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4136383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2068190 + 2068191.

It is an arithmetic number, because the mean of its divisors is an integer number (2068191).

Almost surely, 2^4136381 is an apocalyptic number.

It is an amenable number.

4136381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4136381 is an equidigital number, since it uses as much as digits as its factorization.

4136381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 4136381 is about 2033.8094797694. The cubic root of 4136381 is about 160.5240758001.

The spelling of 4136381 in words is "four million, one hundred thirty-six thousand, three hundred eighty-one".