618841 has 2 divisors, whose sum is σ = 618842. Its totient is φ = 618840.

The previous prime is 618833. The next prime is 618847. The reversal of 618841 is 148816.

618841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 163216 = 675^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 618841 - 2³ = 618833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (618847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309420 + 309421.

It is an arithmetic number, because the mean of its divisors is an integer number (309421).

2⁶¹⁸⁸⁴¹ is an apocalyptic number.

It is an amenable number.

618841 is a deficient number, since it is larger than the sum of its proper divisors (1).

618841 is an equidigital number, since it uses as much as digits as its factorization.

618841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 28.

The square root of 618841 is about 786.6644773981. The cubic root of 618841 is about 85.2170232760.

The spelling of 618841 in words is "six hundred eighteen thousand, eight hundred forty-one".