818422101 has 24 divisors (see below), whose sum is σ = 1354953600. Its totient is φ = 466317216.

The previous prime is 818422091. The next prime is 818422117. The reversal of 818422101 is 101224818.

It is not a de Polignac number, because 818422101 - 2⁵ = 818422069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818422151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3376 + ... + 40598.

It is an arithmetic number, because the mean of its divisors is an integer number (56456400).

Almost surely, 2^818422101 is an apocalyptic number.

It is an amenable number.

818422101 is a deficient number, since it is larger than the sum of its proper divisors (536531499).

818422101 is a wasteful number, since it uses less digits than its factorization.

818422101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37585 (or 37582 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 818422101 is about 28608.0775481331. The cubic root of 818422101 is about 935.3894117977.

Adding to 818422101 its reverse (101224818), we get a palindrome (919646919).

The spelling of 818422101 in words is "eight hundred eighteen million, four hundred twenty-two thousand, one hundred one".