9126878866 has 12 divisors (see below), whose sum is σ = 15925472478. Its totient is φ = 3911519472.

The previous prime is 9126878851. The next prime is 9126878867. The reversal of 9126878866 is 6688786219.

It can be written as a sum of positive squares in only one way, i.e., 8198397025 + 928481841 = 90545^2 + 30471^2 .

It is not an unprimeable number, because it can be changed into a prime (9126878867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46565611 + ... + 46565806.

Almost surely, 2^9126878866 is an apocalyptic number.

9126878866 is a deficient number, since it is larger than the sum of its proper divisors (6798593612).

9126878866 is a wasteful number, since it uses less digits than its factorization.

9126878866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93131433 (or 93131426 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 61.

The square root of 9126878866 is about 95534.6998006484. The cubic root of 9126878866 is about 2089.8130115136.

The spelling of 9126878866 in words is "nine billion, one hundred twenty-six million, eight hundred seventy-eight thousand, eight hundred sixty-six".