4978078867 has 4 divisors (see below), whose sum is σ = 4982170536. Its totient is φ = 4973987200.

The previous prime is 4978078849. The next prime is 4978078879. The reversal of 4978078867 is 7688708794.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4978078867 - 2¹⁹ = 4977554579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4978078799 and 4978078808.

It is not an unprimeable number, because it can be changed into a prime (4978088867) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2044009 + ... + 2046442.

It is an arithmetic number, because the mean of its divisors is an integer number (1245542634).

Almost surely, 2^4978078867 is an apocalyptic number.

4978078867 is a deficient number, since it is larger than the sum of its proper divisors (4091669).

4978078867 is a wasteful number, since it uses less digits than its factorization.

4978078867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4091668.

The product of its (nonzero) digits is 37933056, while the sum is 64.

The square root of 4978078867 is about 70555.5020320882. The cubic root of 4978078867 is about 1707.4733117224.

The spelling of 4978078867 in words is "four billion, nine hundred seventy-eight million, seventy-eight thousand, eight hundred sixty-seven".