868538378 has 16 divisors (see below), whose sum is σ = 1332794760. Its totient is φ = 424382976.

The previous prime is 868538329. The next prime is 868538387. The reversal of 868538378 is 873835868.

It can be written as a sum of positive squares in 4 ways, for example, as 812991169 + 55547209 = 28513^2 + 7453^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11375 + ... + 43202.

Almost surely, 2^868538378 is an apocalyptic number.

868538378 is a deficient number, since it is larger than the sum of its proper divisors (464256382).

868538378 is a wasteful number, since it uses less digits than its factorization.

868538378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54761.

The product of its digits is 7741440, while the sum is 56.

The square root of 868538378 is about 29470.9751789791. The cubic root of 868538378 is about 954.1053646736.

The spelling of 868538378 in words is "eight hundred sixty-eight million, five hundred thirty-eight thousand, three hundred seventy-eight".