9506780861 has 16 divisors (see below), whose sum is σ = 9922176000. Its totient is φ = 9101159088.

The previous prime is 9506780849. The next prime is 9506780879. The reversal of 9506780861 is 1680876059.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9506780861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9506710861) 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, 874940 + ... + 885738.

It is an arithmetic number, because the mean of its divisors is an integer number (620136000).

Almost surely, 2^9506780861 is an apocalyptic number.

It is an amenable number.

9506780861 is a deficient number, since it is larger than the sum of its proper divisors (415395139).

9506780861 is a wasteful number, since it uses less digits than its factorization.

9506780861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11248.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 9506780861 is about 97502.7223260971. The cubic root of 9506780861 is about 2118.4155763353.

The spelling of 9506780861 in words is "nine billion, five hundred six million, seven hundred eighty thousand, eight hundred sixty-one".