4978517850 has 192 divisors, whose sum is σ = 14243374080. Its totient is φ = 1277337600.

The previous prime is 4978517839. The next prime is 4978517851. The reversal of 4978517850 is 587158794.

4978517850 is a `hidden beast` number, since 4 + 9 + 78 + 517 + 8 + 50 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (4978517851) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 14103274 + ... + 14103626.

It is an arithmetic number, because the mean of its divisors is an integer number (74184240).

Almost surely, 2^4978517850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4978517850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7121687040).

4978517850 is an abundant number, since it is smaller than the sum of its proper divisors (9264856230).

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

4978517850 is a wasteful number, since it uses less digits than its factorization.

4978517850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 54.

The square root of 4978517850 is about 70558.6128690183. The cubic root of 4978517850 is about 1707.5235004093.

The spelling of 4978517850 in words is "four billion, nine hundred seventy-eight million, five hundred seventeen thousand, eight hundred fifty".