9478259820 has 192 divisors, whose sum is σ = 31344768000. Its totient is φ = 2370995712.

The previous prime is 9478259797. The next prime is 9478259831. The reversal of 9478259820 is 289528749.

9478259820 is a `hidden beast` number, since 9 + 47 + 8 + 2 + 598 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1052296 + ... + 1061264.

It is an arithmetic number, because the mean of its divisors is an integer number (163254000).

Almost surely, 2^9478259820 is an apocalyptic number.

9478259820 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9478259820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15672384000).

9478259820 is an abundant number, since it is smaller than the sum of its proper divisors (21866508180).

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

9478259820 is a wasteful number, since it uses less digits than its factorization.

9478259820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9109 (or 9101 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 9478259820 is about 97356.3548002903. The cubic root of 9478259820 is about 2116.2949868250.

The spelling of 9478259820 in words is "nine billion, four hundred seventy-eight million, two hundred fifty-nine thousand, eight hundred twenty".