9816121364 has 24 divisors (see below), whose sum is σ = 19815727680. Its totient is φ = 4167590976.

The previous prime is 9816121339. The next prime is 9816121433. The reversal of 9816121364 is 4631216189.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1635209 + ... + 1641200.

It is an arithmetic number, because the mean of its divisors is an integer number (825655320).

Almost surely, 2^9816121364 is an apocalyptic number.

It is an amenable number.

9816121364 is an abundant number, since it is smaller than the sum of its proper divisors (9999606316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9816121364 is a wasteful number, since it uses less digits than its factorization.

9816121364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276527 (or 3276525 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 9816121364 is about 99076.3410911000. The cubic root of 9816121364 is about 2141.1477643620.

The spelling of 9816121364 in words is "nine billion, eight hundred sixteen million, one hundred twenty-one thousand, three hundred sixty-four".