4878254638 has 32 divisors (see below), whose sum is σ = 7579346400. Its totient is φ = 2353660416.

The previous prime is 4878254599. The next prime is 4878254639. The reversal of 4878254638 is 8364528784.

It is a super-2 number, since 2×4878254638² = 47594736626337022088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4878254639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971370 + ... + 1973842.

It is an arithmetic number, because the mean of its divisors is an integer number (236854575).

Almost surely, 2^4878254638 is an apocalyptic number.

4878254638 is a deficient number, since it is larger than the sum of its proper divisors (2701091762).

4878254638 is a wasteful number, since it uses less digits than its factorization.

4878254638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836.

The product of its digits is 10321920, while the sum is 55.

The square root of 4878254638 is about 69844.5032769222. The cubic root of 4878254638 is about 1695.9829765613.

The spelling of 4878254638 in words is "four billion, eight hundred seventy-eight million, two hundred fifty-four thousand, six hundred thirty-eight".