4978738845 has 32 divisors (see below), whose sum is σ = 8983213440. Its totient is φ = 2615690880.

The previous prime is 4978738841. The next prime is 4978738859. The reversal of 4978738845 is 5488378794.

It is not a de Polignac number, because 4978738845 - 2² = 4978738841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978738841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266176 + ... + 284265.

It is an arithmetic number, because the mean of its divisors is an integer number (280725420).

Almost surely, 2^4978738845 is an apocalyptic number.

4978738845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4978738845 is a deficient number, since it is larger than the sum of its proper divisors (4004474595).

4978738845 is a wasteful number, since it uses less digits than its factorization.

4978738845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550522 (or 550516 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The square root of 4978738845 is about 70560.1788900794. The cubic root of 4978738845 is about 1707.5487655307.

The spelling of 4978738845 in words is "four billion, nine hundred seventy-eight million, seven hundred thirty-eight thousand, eight hundred forty-five".