3616381 has 2 divisors, whose sum is σ = 3616382. Its totient is φ = 3616380.

The previous prime is 3616373. The next prime is 3616397. The reversal of 3616381 is 1836163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2859481 + 756900 = 1691^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 3616381 - 2³ = 3616373 is a prime.

It is a super-2 number, since 2×3616381² = 26156423074322, 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 (3616351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1808190 + 1808191.

It is an arithmetic number, because the mean of its divisors is an integer number (1808191).

Almost surely, 2^3616381 is an apocalyptic number.

It is an amenable number.

3616381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3616381 is an equidigital number, since it uses as much as digits as its factorization.

3616381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 3616381 is about 1901.6784691425. The cubic root of 3616381 is about 153.4939961648.

The spelling of 3616381 in words is "three million, six hundred sixteen thousand, three hundred eighty-one".