9816972766 has 4 divisors (see below), whose sum is σ = 14725459152. Its totient is φ = 4908486382.

The previous prime is 9816972757. The next prime is 9816972791. The reversal of 9816972766 is 6672796189.

9816972766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2454243190 + ... + 2454243193.

It is an arithmetic number, because the mean of its divisors is an integer number (3681364788).

Almost surely, 2^9816972766 is an apocalyptic number.

9816972766 is a deficient number, since it is larger than the sum of its proper divisors (4908486386).

9816972766 is a wasteful number, since it uses less digits than its factorization.

9816972766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908486385.

The product of its digits is 13716864, while the sum is 61.

The square root of 9816972766 is about 99080.6376947585. The cubic root of 9816972766 is about 2141.2096667747.

The spelling of 9816972766 in words is "nine billion, eight hundred sixteen million, nine hundred seventy-two thousand, seven hundred sixty-six".