9474741978 has 96 divisors (see below), whose sum is σ = 21476528640. Its totient is φ = 2781941760.

The previous prime is 9474741949. The next prime is 9474742063. The reversal of 9474741978 is 8791474749.

It is a Curzon 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, 2292618 + ... + 2296746.

It is an arithmetic number, because the mean of its divisors is an integer number (223713840).

Almost surely, 2^9474741978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9474741978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10738264320).

9474741978 is an abundant number, since it is smaller than the sum of its proper divisors (12001786662).

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

9474741978 is a wasteful number, since it uses less digits than its factorization.

9474741978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264 (or 4251 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 60.

The square root of 9474741978 is about 97338.2862906472. The cubic root of 9474741978 is about 2116.0331345173.

The spelling of 9474741978 in words is "nine billion, four hundred seventy-four million, seven hundred forty-one thousand, nine hundred seventy-eight".