9816804423 has 32 divisors (see below), whose sum is σ = 15537401600. Its totient is φ = 6107527008.

The previous prime is 9816804419. The next prime is 9816804427. The reversal of 9816804423 is 3244086189.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9816804419) and next prime (9816804427).

It is not a de Polignac number, because 9816804423 - 2² = 9816804419 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 (9816804427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108436 + ... + 177177.

It is an arithmetic number, because the mean of its divisors is an integer number (485543800).

Almost surely, 2^9816804423 is an apocalyptic number.

9816804423 is a deficient number, since it is larger than the sum of its proper divisors (5720597177).

9816804423 is a wasteful number, since it uses less digits than its factorization.

9816804423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285708 (or 285702 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 9816804423 is about 99079.7881659019. The cubic root of 9816804423 is about 2141.1974274375.

The spelling of 9816804423 in words is "nine billion, eight hundred sixteen million, eight hundred four thousand, four hundred twenty-three".