868991178 has 32 divisors (see below), whose sum is σ = 1936327680. Its totient is φ = 257726960.

The previous prime is 868991113. The next prime is 868991203. The reversal of 868991178 is 871199868.

868991178 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136968 + ... + 143171.

It is an arithmetic number, because the mean of its divisors is an integer number (60510240).

Almost surely, 2^868991178 is an apocalyptic number.

868991178 is an abundant number, since it is smaller than the sum of its proper divisors (1067336502).

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

868991178 is a wasteful number, since it uses less digits than its factorization.

868991178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280202.

The product of its digits is 1741824, while the sum is 57.

The square root of 868991178 is about 29478.6563126612. The cubic root of 868991178 is about 954.2711389084.

The spelling of 868991178 in words is "eight hundred sixty-eight million, nine hundred ninety-one thousand, one hundred seventy-eight".