9316825821 has 12 divisors (see below), whose sum is σ = 13956068672. Its totient is φ = 6211217052.

The previous prime is 9316825813. The next prime is 9316825831. The reversal of 9316825821 is 1285286139.

9316825821 is a `hidden beast` number, since 9 + 3 + 1 + 68 + 2 + 582 + 1 = 666.

It is not a de Polignac number, because 9316825821 - 2³ = 9316825813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9316825831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19170181 + ... + 19170666.

Almost surely, 2^9316825821 is an apocalyptic number.

It is an amenable number.

9316825821 is a deficient number, since it is larger than the sum of its proper divisors (4639242851).

9316825821 is an equidigital number, since it uses as much as digits as its factorization.

9316825821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38340862 (or 38340850 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 9316825821 is about 96523.7060053125. The cubic root of 9316825821 is about 2104.2111883178.

The spelling of 9316825821 in words is "nine billion, three hundred sixteen million, eight hundred twenty-five thousand, eight hundred twenty-one".