538841778 has 64 divisors (see below), whose sum is σ = 1129075200. Its totient is φ = 171325440.

The previous prime is 538841773. The next prime is 538841869. The reversal of 538841778 is 877148835.

It is a self number, because there is not a number n which added to its sum of digits gives 538841778.

It is not an unprimeable number, because it can be changed into a prime (538841773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2235738 + ... + 2235978.

It is an arithmetic number, because the mean of its divisors is an integer number (17641800).

Almost surely, 2^538841778 is an apocalyptic number.

538841778 is an abundant number, since it is smaller than the sum of its proper divisors (590233422).

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

538841778 is a wasteful number, since it uses less digits than its factorization.

538841778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its digits is 1505280, while the sum is 51.

The square root of 538841778 is about 23212.9657303844. The cubic root of 538841778 is about 813.7426648639.

The spelling of 538841778 in words is "five hundred thirty-eight million, eight hundred forty-one thousand, seven hundred seventy-eight".