9643694980 has 12 divisors (see below), whose sum is σ = 20251759500. Its totient is φ = 3857477984.

The previous prime is 9643694971. The next prime is 9643695053. The reversal of 9643694980 is 894963469.

It can be written as a sum of positive squares in 2 ways, for example, as 6364529284 + 3279165696 = 79778^2 + 57264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241092355 + ... + 241092394.

It is an arithmetic number, because the mean of its divisors is an integer number (1687646625).

Almost surely, 2^9643694980 is an apocalyptic number.

It is an amenable number.

9643694980 is an abundant number, since it is smaller than the sum of its proper divisors (10608064520).

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

9643694980 is a wasteful number, since it uses less digits than its factorization.

9643694980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482184758 (or 482184756 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 58.

The square root of 9643694980 is about 98202.3165714536. The cubic root of 9643694980 is about 2128.5367616447.

The spelling of 9643694980 in words is "nine billion, six hundred forty-three million, six hundred ninety-four thousand, nine hundred eighty".