478538851 has 16 divisors (see below), whose sum is σ = 582336000. Its totient is φ = 392335944.

The previous prime is 478538833. The next prime is 478538861. The reversal of 478538851 is 158835874.

It is not a de Polignac number, because 478538851 - 2⁹ = 478538339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478538795 and 478538804.

It is not an unprimeable number, because it can be changed into a prime (478538821) 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, 22441 + ... + 38218.

It is an arithmetic number, because the mean of its divisors is an integer number (36396000).

Almost surely, 2^478538851 is an apocalyptic number.

478538851 is a deficient number, since it is larger than the sum of its proper divisors (103797149).

478538851 is an equidigital number, since it uses as much as digits as its factorization.

478538851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60703 (or 60689 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 49.

The square root of 478538851 is about 21875.5308735582. The cubic root of 478538851 is about 782.1782478183.

The spelling of 478538851 in words is "four hundred seventy-eight million, five hundred thirty-eight thousand, eight hundred fifty-one".