9164196978 has 32 divisors (see below), whose sum is σ = 18443738880. Its totient is φ = 3035566080.

The previous prime is 9164196961. The next prime is 9164196989. The reversal of 9164196978 is 8796914619.

It is a happy 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, 657708 + ... + 671496.

It is an arithmetic number, because the mean of its divisors is an integer number (576366840).

Almost surely, 2^9164196978 is an apocalyptic number.

9164196978 is an abundant number, since it is smaller than the sum of its proper divisors (9279541902).

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

9164196978 is a wasteful number, since it uses less digits than its factorization.

9164196978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14482.

The product of its digits is 5878656, while the sum is 60.

The square root of 9164196978 is about 95729.8123783809. The cubic root of 9164196978 is about 2092.6574239835.

The spelling of 9164196978 in words is "nine billion, one hundred sixty-four million, one hundred ninety-six thousand, nine hundred seventy-eight".