3618481 has 4 divisors (see below), whose sum is σ = 3626100. Its totient is φ = 3610864.

The previous prime is 3618479. The next prime is 3618497. The reversal of 3618481 is 1848163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1848163 = 53 ⋅34871.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 1915456 = 1305^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 3618481 - 2¹ = 3618479 is a prime.

It is a super-2 number, since 2×3618481² = 26186809494722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

3618481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3618421) 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 in 3 ways as a sum of consecutive naturals, for example, 3046 + ... + 4063.

It is an arithmetic number, because the mean of its divisors is an integer number (906525).

Almost surely, 2^3618481 is an apocalyptic number.

It is an amenable number.

3618481 is a deficient number, since it is larger than the sum of its proper divisors (7619).

3618481 is an equidigital number, since it uses as much as digits as its factorization.

3618481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7618.

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

The square root of 3618481 is about 1902.2305328219. The cubic root of 3618481 is about 153.5237012778.

The spelling of 3618481 in words is "three million, six hundred eighteen thousand, four hundred eighty-one".