485198778 has 16 divisors (see below), whose sum is σ = 971578080. Its totient is φ = 161536176.

The previous prime is 485198771. The next prime is 485198873. The reversal of 485198778 is 877891584.

It is not an unprimeable number, because it can be changed into a prime (485198771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43800 + ... + 53747.

It is an arithmetic number, because the mean of its divisors is an integer number (60723630).

Almost surely, 2^485198778 is an apocalyptic number.

485198778 is an abundant number, since it is smaller than the sum of its proper divisors (486379302).

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

485198778 is a wasteful number, since it uses less digits than its factorization.

485198778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98381.

The product of its digits is 4515840, while the sum is 57.

The square root of 485198778 is about 22027.2281052338. The cubic root of 485198778 is about 785.7901238942.

The spelling of 485198778 in words is "four hundred eighty-five million, one hundred ninety-eight thousand, seven hundred seventy-eight".