4990984578 has 24 divisors (see below), whose sum is σ = 10885420416. Its totient is φ = 1652643000.

The previous prime is 4990984577. The next prime is 4990984601. The reversal of 4990984578 is 8754890994.

4990984578 is a `hidden beast` number, since 4 + 9 + 90 + 98 + 457 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (4990984577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 915418 + ... + 920853.

It is an arithmetic number, because the mean of its divisors is an integer number (453559184).

Almost surely, 2^4990984578 is an apocalyptic number.

4990984578 is an abundant number, since it is smaller than the sum of its proper divisors (5894435838).

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

4990984578 is a wasteful number, since it uses less digits than its factorization.

4990984578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836430 (or 1836427 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The square root of 4990984578 is about 70646.9006963504. The cubic root of 4990984578 is about 1708.9475847031.

The spelling of 4990984578 in words is "four billion, nine hundred ninety million, nine hundred eighty-four thousand, five hundred seventy-eight".