4923543978 has 48 divisors (see below), whose sum is σ = 11323919880. Its totient is φ = 1540712448.

The previous prime is 4923543943. The next prime is 4923543997. The reversal of 4923543978 is 8793453294.

4923543978 is a `hidden beast` number, since 4 + 9 + 2 + 3 + 543 + 97 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4852933569 + 70610409 = 69663^2 + 8403^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101218 + ... + 141746.

Almost surely, 2^4923543978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4923543978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5661959940).

4923543978 is an abundant number, since it is smaller than the sum of its proper divisors (6400375902).

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

4923543978 is a wasteful number, since it uses less digits than its factorization.

4923543978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40951 (or 40948 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 4923543978 is about 70167.9697440363. The cubic root of 4923543978 is about 1701.2152761286.

The spelling of 4923543978 in words is "four billion, nine hundred twenty-three million, five hundred forty-three thousand, nine hundred seventy-eight".