9683937649 has 3 divisors (see below), whose sum is σ = 9684036057. Its totient is φ = 9683839242.

The previous prime is 9683937643. The next prime is 9683937667. The reversal of 9683937649 is 9467393869.

The square root of 9683937649 is 98407.

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.

It is a de Polignac number, because none of the positive numbers 2^k-9683937649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9683937643) 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, 49204 + ... + 147610.

It is an arithmetic number, because the mean of its divisors is an integer number (3228012019).

Almost surely, 2^9683937649 is an apocalyptic number.

9683937649 is the 98407-th square number.

9683937649 is the 49204-th centered octagonal number.

It is an amenable number.

9683937649 is a deficient number, since it is larger than the sum of its proper divisors (98408).

9683937649 is an frugal number, since it uses more digits than its factorization.

9683937649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196814 (or 98407 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 64.

The cubic root of 9683937649 is about 2131.4934128419.

Multiplying 9683937649 by its sum of digits (64), we get a square (619772009536 = 787256²).

The spelling of 9683937649 in words is "nine billion, six hundred eighty-three million, nine hundred thirty-seven thousand, six hundred forty-nine".