978622918 has 32 divisors (see below), whose sum is σ = 1912970304. Its totient is φ = 364372992.

The previous prime is 978622877. The next prime is 978622937. The reversal of 978622918 is 819226879.

978622918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 155055 + ... + 161242.

It is an arithmetic number, because the mean of its divisors is an integer number (59780322).

Almost surely, 2^978622918 is an apocalyptic number.

978622918 is a deficient number, since it is larger than the sum of its proper divisors (934347386).

978622918 is a wasteful number, since it uses less digits than its factorization.

978622918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316336.

The product of its digits is 870912, while the sum is 52.

The square root of 978622918 is about 31282.9493174796. The cubic root of 978622918 is about 992.8229187362.

The spelling of 978622918 in words is "nine hundred seventy-eight million, six hundred twenty-two thousand, nine hundred eighteen".