810900101 has 8 divisors (see below), whose sum is σ = 885472608. Its totient is φ = 736470000.

The previous prime is 810900073. The next prime is 810900109. The reversal of 810900101 is 101009018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 810900101 - 2⁶ = 810900037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810900109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23510 + ... + 46631.

It is an arithmetic number, because the mean of its divisors is an integer number (110684076).

Almost surely, 2^810900101 is an apocalyptic number.

It is an amenable number.

810900101 is a deficient number, since it is larger than the sum of its proper divisors (74572507).

810900101 is a wasteful number, since it uses less digits than its factorization.

810900101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71203.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 810900101 is about 28476.3077136064. The cubic root of 810900101 is about 932.5149107674.

Adding to 810900101 its reverse (101009018), we get a palindrome (911909119).

The spelling of 810900101 in words is "eight hundred ten million, nine hundred thousand, one hundred one".