168479978 has 16 divisors (see below), whose sum is σ = 262938624. Its totient is φ = 80876880.

The previous prime is 168479933. The next prime is 168479989. The reversal of 168479978 is 879974861.

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, 2825 + ... + 18572.

It is an arithmetic number, because the mean of its divisors is an integer number (16433664).

Almost surely, 2^168479978 is an apocalyptic number.

168479978 is a deficient number, since it is larger than the sum of its proper divisors (94458646).

168479978 is a wasteful number, since it uses less digits than its factorization.

168479978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21557.

The product of its digits is 6096384, while the sum is 59.

The square root of 168479978 is about 12979.9837442117. The cubic root of 168479978 is about 552.3098209109.

The spelling of 168479978 in words is "one hundred sixty-eight million, four hundred seventy-nine thousand, nine hundred seventy-eight".