4278985830 has 96 divisors (see below), whose sum is σ = 12725653824. Its totient is φ = 977211648.

The previous prime is 4278985817. The next prime is 4278985847. The reversal of 4278985830 is 385898724.

It is a happy number.

4278985830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1003984 + ... + 1008236.

It is an arithmetic number, because the mean of its divisors is an integer number (132558894).

Almost surely, 2^4278985830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4278985830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6362826912).

4278985830 is an abundant number, since it is smaller than the sum of its proper divisors (8446667994).

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

4278985830 is a wasteful number, since it uses less digits than its factorization.

4278985830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870 (or 5867 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The square root of 4278985830 is about 65413.9574555767. The cubic root of 4278985830 is about 1623.4800247009.

The spelling of 4278985830 in words is "four billion, two hundred seventy-eight million, nine hundred eighty-five thousand, eight hundred thirty".