4194442878 has 16 divisors (see below), whose sum is σ = 8882349840. Its totient is φ = 1315903616.

The previous prime is 4194442873. The next prime is 4194442897. The reversal of 4194442878 is 8782444914.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 4194442878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4194442873) 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 7 ways as a sum of consecutive naturals, for example, 20560893 + ... + 20561096.

It is an arithmetic number, because the mean of its divisors is an integer number (555146865).

Almost surely, 2^4194442878 is an apocalyptic number.

4194442878 is an abundant number, since it is smaller than the sum of its proper divisors (4687906962).

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

4194442878 is a wasteful number, since it uses less digits than its factorization.

4194442878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41122011.

The product of its digits is 2064384, while the sum is 51.

The square root of 4194442878 is about 64764.5186657015. The cubic root of 4194442878 is about 1612.7167430785.

The spelling of 4194442878 in words is "four billion, one hundred ninety-four million, four hundred forty-two thousand, eight hundred seventy-eight".