4398181811 has 2 divisors, whose sum is σ = 4398181812. Its totient is φ = 4398181810.

The previous prime is 4398181721. The next prime is 4398181841. The reversal of 4398181811 is 1181818934.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4398181811 - 2¹⁴ = 4398165427 is a prime.

It is a super-3 number, since 3×4398181811³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (4398181841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199090905 + 2199090906.

It is an arithmetic number, because the mean of its divisors is an integer number (2199090906).

Almost surely, 2^4398181811 is an apocalyptic number.

4398181811 is a deficient number, since it is larger than the sum of its proper divisors (1).

4398181811 is an equidigital number, since it uses as much as digits as its factorization.

4398181811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 44.

The square root of 4398181811 is about 66318.7892757399. The cubic root of 4398181811 is about 1638.4168008740.

The spelling of 4398181811 in words is "four billion, three hundred ninety-eight million, one hundred eighty-one thousand, eight hundred eleven".