9816648241 has 3 divisors (see below), whose sum is σ = 9816747321. Its totient is φ = 9816549162.

The previous prime is 9816648227. The next prime is 9816648251. The reversal of 9816648241 is 1428466189.

It is a happy number.

The square root of 9816648241 is 99079.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1428466189 = 19 ⋅75182431.

It is not a de Polignac number, because 9816648241 - 2¹⁹ = 9816123953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9816648211) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 49540 + ... + 148618.

It is an arithmetic number, because the mean of its divisors is an integer number (3272249107).

Almost surely, 2^9816648241 is an apocalyptic number.

9816648241 is the 99079-th square number.

9816648241 is the 49540-th centered octagonal number.

It is an amenable number.

9816648241 is a deficient number, since it is larger than the sum of its proper divisors (99080).

9816648241 is an frugal number, since it uses more digits than its factorization.

9816648241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198158 (or 99079 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The cubic root of 9816648241 is about 2141.1860721378.

Multiplying 9816648241 by its sum of digits (49), we get a square (481015763809 = 693553²).

The spelling of 9816648241 in words is "nine billion, eight hundred sixteen million, six hundred forty-eight thousand, two hundred forty-one".