9931268506 has 4 divisors (see below), whose sum is σ = 14896902762. Its totient is φ = 4965634252.

The previous prime is 9931268449. The next prime is 9931268521. The reversal of 9931268506 is 6058621399.

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

It can be written as a sum of positive squares in only one way, i.e., 9877378225 + 53890281 = 99385^2 + 7341^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 9931268506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2482817125 + ... + 2482817128.

Almost surely, 2^9931268506 is an apocalyptic number.

9931268506 is a deficient number, since it is larger than the sum of its proper divisors (4965634256).

9931268506 is a wasteful number, since it uses less digits than its factorization.

9931268506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965634255.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 9931268506 is about 99655.7499896519. The cubic root of 9931268506 is about 2149.4874210550.

The spelling of 9931268506 in words is "nine billion, nine hundred thirty-one million, two hundred sixty-eight thousand, five hundred six".