9461812644 has 36 divisors (see below), whose sum is σ = 23949023644. Its totient is φ = 3149762112.

The previous prime is 9461812631. The next prime is 9461812649. The reversal of 9461812644 is 4462181649.

9461812644 is a `hidden beast` number, since 9 + 4 + 618 + 1 + 26 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5489031744 + 3972780900 = 74088^2 + 63030^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9461812644.

It is not an unprimeable number, because it can be changed into a prime (9461812649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146347 + ... + 200850.

Almost surely, 2^9461812644 is an apocalyptic number.

It is an amenable number.

9461812644 is an abundant number, since it is smaller than the sum of its proper divisors (14487211000).

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

9461812644 is a wasteful number, since it uses less digits than its factorization.

9461812644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347964 (or 347959 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 9461812644 is about 97271.8491856714. The cubic root of 9461812644 is about 2115.0701758986.

The spelling of 9461812644 in words is "nine billion, four hundred sixty-one million, eight hundred twelve thousand, six hundred forty-four".