6430858884 has 18 divisors (see below), whose sum is σ = 16255782270. Its totient is φ = 2143619616.

The previous prime is 6430858877. The next prime is 6430858927. The reversal of 6430858884 is 4888580346.

It can be written as a sum of positive squares in only one way, i.e., 5152081284 + 1278777600 = 71778^2 + 35760^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 6430858884.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89317449 + ... + 89317520.

It is an arithmetic number, because the mean of its divisors is an integer number (903099015).

Almost surely, 2^6430858884 is an apocalyptic number.

It is an amenable number.

6430858884 is an abundant number, since it is smaller than the sum of its proper divisors (9824923386).

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

6430858884 is a wasteful number, since it uses less digits than its factorization.

6430858884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178634979 (or 178634974 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The square root of 6430858884 is about 80192.6360958411. The cubic root of 6430858884 is about 1859.6147970950.

The spelling of 6430858884 in words is "six billion, four hundred thirty million, eight hundred fifty-eight thousand, eight hundred eighty-four".