4178954978 has 24 divisors (see below), whose sum is σ = 6954531696. Its totient is φ = 1881760760.

The previous prime is 4178954959. The next prime is 4178954987. The reversal of 4178954978 is 8794598714.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4178954978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54800 + ... + 106587.

It is an arithmetic number, because the mean of its divisors is an integer number (289772154).

Almost surely, 2^4178954978 is an apocalyptic number.

4178954978 is a deficient number, since it is larger than the sum of its proper divisors (2775576718).

4178954978 is a wasteful number, since it uses less digits than its factorization.

4178954978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161518 (or 161507 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 62.

The square root of 4178954978 is about 64644.8372107162. The cubic root of 4178954978 is about 1610.7293196636.

The spelling of 4178954978 in words is "four billion, one hundred seventy-eight million, nine hundred fifty-four thousand, nine hundred seventy-eight".