898181 has 2 divisors, whose sum is σ = 898182. Its totient is φ = 898180.

The previous prime is 898171. The next prime is 898189. The reversal of 898181 is 181898.

898181 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., 749956 + 148225 = 866^2 + 385^2 .

It is a cyclic number.

It is not a de Polignac number, because 898181 - 2¹⁰ = 897157 is a prime.

It is a super-2 number, since 2×898181² = 1613458217522, which contains 22 as substring.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 898181.

It is not a weakly prime, because it can be changed into another prime (898189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449090 + 449091.

It is an arithmetic number, because the mean of its divisors is an integer number (449091).

2⁸⁹⁸¹⁸¹ is an apocalyptic number.

It is an amenable number.

898181 is a deficient number, since it is larger than the sum of its proper divisors (1).

898181 is an equidigital number, since it uses as much as digits as its factorization.

898181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 35.

The square root of 898181 is about 947.7241159747. The cubic root of 898181 is about 96.4838492126.

It can be divided in two parts, 8 and 98181, that added together give a palindrome (98189).

The spelling of 898181 in words is "eight hundred ninety-eight thousand, one hundred eighty-one".