810106203481 has 9 divisors (see below), whose sum is σ = 846881245119. Its totient is φ = 774864393336.

The previous prime is 810106203451. The next prime is 810106203503. The reversal of 810106203481 is 184302601018.

The square root of 810106203481 is 900059.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 783499374025 + 26606829456 = 885155^2 + 163116^2 .

It is not a de Polignac number, because 810106203481 - 2¹⁹ = 810105679193 is a prime.

It is a super-2 number, since 2×810106203481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810106203421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20681791 + ... + 20720923.

Almost surely, 2^810106203481 is an apocalyptic number.

810106203481 is the 900059-th square number.

810106203481 is the 450030-th centered octagonal number.

It is an amenable number.

810106203481 is a deficient number, since it is larger than the sum of its proper divisors (36775041638).

810106203481 is an frugal number, since it uses more digits than its factorization.

810106203481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78312 (or 39156 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

Adding to 810106203481 its reverse (184302601018), we get a palindrome (994408804499).

The spelling of 810106203481 in words is "eight hundred ten billion, one hundred six million, two hundred three thousand, four hundred eighty-one".