9643434780 has 48 divisors (see below), whose sum is σ = 30858992640. Its totient is φ = 2204213568.

The previous prime is 9643434751. The next prime is 9643434791. The reversal of 9643434780 is 874343469.

9643434780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9643434780² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 11479860 + ... + 11480699.

It is an arithmetic number, because the mean of its divisors is an integer number (642895680).

Almost surely, 2^9643434780 is an apocalyptic number.

It is an amenable number.

9643434780 is an abundant number, since it is smaller than the sum of its proper divisors (21215557860).

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

9643434780 is a wasteful number, since it uses less digits than its factorization.

9643434780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22960578 (or 22960576 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The square root of 9643434780 is about 98200.9917465195. The cubic root of 9643434780 is about 2128.5176178675.

The spelling of 9643434780 in words is "nine billion, six hundred forty-three million, four hundred thirty-four thousand, seven hundred eighty".