8437978018 has 8 divisors (see below), whose sum is σ = 12727676880. Its totient is φ = 4195419060.

The previous prime is 8437978013. The next prime is 8437978061. The reversal of 8437978018 is 8108797348.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8437978018.

It is not an unprimeable number, because it can be changed into a prime (8437978013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11784528 + ... + 11785243.

It is an arithmetic number, because the mean of its divisors is an integer number (1590959610).

Almost surely, 2^8437978018 is an apocalyptic number.

8437978018 is a deficient number, since it is larger than the sum of its proper divisors (4289698862).

8437978018 is a wasteful number, since it uses less digits than its factorization.

8437978018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23569952.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The square root of 8437978018 is about 91858.4673179343. The cubic root of 8437978018 is about 2035.8516573640.

The spelling of 8437978018 in words is "eight billion, four hundred thirty-seven million, nine hundred seventy-eight thousand, eighteen".