9651481864 has 16 divisors (see below), whose sum is σ = 18117082620. Its totient is φ = 4820259840.

The previous prime is 9651481849. The next prime is 9651481871. The reversal of 9651481864 is 4681841569.

9651481864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7751393764 + 1900088100 = 88042^2 + 43590^2 .

It is a super-2 number, since 2×9651481864² (a number of 21 digits) contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 677649 + ... + 691744.

Almost surely, 2^9651481864 is an apocalyptic number.

It is an amenable number.

9651481864 is a deficient number, since it is larger than the sum of its proper divisors (8465600756).

9651481864 is a wasteful number, since it uses less digits than its factorization.

9651481864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370280 (or 1370276 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The square root of 9651481864 is about 98241.9557215755. The cubic root of 9651481864 is about 2129.1095092540.

The spelling of 9651481864 in words is "nine billion, six hundred fifty-one million, four hundred eighty-one thousand, eight hundred sixty-four".