8969666538 has 32 divisors (see below), whose sum is σ = 20632696704. Its totient is φ = 2546436672.

The previous prime is 8969666521. The next prime is 8969666539. The reversal of 8969666538 is 8356669698.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8969666539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673545 + ... + 686732.

It is an arithmetic number, because the mean of its divisors is an integer number (644771772).

Almost surely, 2^8969666538 is an apocalyptic number.

8969666538 is an abundant number, since it is smaller than the sum of its proper divisors (11663030166).

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

8969666538 is a wasteful number, since it uses less digits than its factorization.

8969666538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360446.

The product of its digits is 100776960, while the sum is 66.

The square root of 8969666538 is about 94708.3234884875. The cubic root of 8969666538 is about 2077.7442985066.

The spelling of 8969666538 in words is "eight billion, nine hundred sixty-nine million, six hundred sixty-six thousand, five hundred thirty-eight".