2168978604 has 24 divisors (see below), whose sum is σ = 5450254320. Its totient is φ = 667377984.

The previous prime is 2168978587. The next prime is 2168978629. The reversal of 2168978604 is 4068798612.

2168978604 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 7 ways as a sum of consecutive naturals, for example, 6951699 + ... + 6952010.

It is an arithmetic number, because the mean of its divisors is an integer number (227093930).

Almost surely, 2^2168978604 is an apocalyptic number.

It is an amenable number.

2168978604 is an abundant number, since it is smaller than the sum of its proper divisors (3281275716).

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

2168978604 is a wasteful number, since it uses less digits than its factorization.

2168978604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903729 (or 13903727 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 2168978604 is about 46572.2943819606. The cubic root of 2168978604 is about 1294.4494320848.

The spelling of 2168978604 in words is "two billion, one hundred sixty-eight million, nine hundred seventy-eight thousand, six hundred four".