3818641 has 2 divisors, whose sum is σ = 3818642. Its totient is φ = 3818640.

The previous prime is 3818603. The next prime is 3818651. The reversal of 3818641 is 1468183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 1745041 = 1440^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 3818641 - 2⁷ = 3818513 is a prime.

It is a Chen prime.

3818641 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3818651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909320 + 1909321.

It is an arithmetic number, because the mean of its divisors is an integer number (1909321).

Almost surely, 2^3818641 is an apocalyptic number.

It is an amenable number.

3818641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3818641 is an equidigital number, since it uses as much as digits as its factorization.

3818641 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 3818641 is about 1954.1343351981. The cubic root of 3818641 is about 156.3038265751.

The spelling of 3818641 in words is "three million, eight hundred eighteen thousand, six hundred forty-one".