4286378978 has 24 divisors (see below), whose sum is σ = 7556416812. Its totient is φ = 1818077184.

The previous prime is 4286378947. The next prime is 4286378983. The reversal of 4286378978 is 8798736824.

It can be written as a sum of positive squares in 2 ways, for example, as 3692628289 + 593750689 = 60767^2 + 24367^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4286378978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215951 + ... + 234962.

Almost surely, 2^4286378978 is an apocalyptic number.

4286378978 is a deficient number, since it is larger than the sum of its proper divisors (3270037834).

4286378978 is a wasteful number, since it uses less digits than its factorization.

4286378978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451026 (or 451019 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 62.

The square root of 4286378978 is about 65470.4435451601. The cubic root of 4286378978 is about 1624.4144923970.

The spelling of 4286378978 in words is "four billion, two hundred eighty-six million, three hundred seventy-eight thousand, nine hundred seventy-eight".