3618281 has 2 divisors, whose sum is σ = 3618282. Its totient is φ = 3618280.

The previous prime is 3618269. The next prime is 3618283. The reversal of 3618281 is 1828163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3610000 + 8281 = 1900^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 3618281 - 2⁶ = 3618217 is a prime.

It is a super-2 number, since 2×3618281² = 26183914789922, which contains 22 as substring.

Together with 3618283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3618283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1809140 + 1809141.

It is an arithmetic number, because the mean of its divisors is an integer number (1809141).

Almost surely, 2^3618281 is an apocalyptic number.

It is an amenable number.

3618281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3618281 is an equidigital number, since it uses as much as digits as its factorization.

3618281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 3618281 is about 1902.1779622317. The cubic root of 3618281 is about 153.5208727147.

It can be divided in two parts, 36182 and 81, that added together give a palindrome (36263).

The spelling of 3618281 in words is "three million, six hundred eighteen thousand, two hundred eighty-one".