4238978816 has 36 divisors (see below), whose sum is σ = 8600142264. Its totient is φ = 2084736000.

The previous prime is 4238978813. The next prime is 4238978851. The reversal of 4238978816 is 6188798324.

4238978816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4238978813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120110 + ... + 151341.

Almost surely, 2^4238978816 is an apocalyptic number.

It is an amenable number.

4238978816 is an abundant number, since it is smaller than the sum of its proper divisors (4361163448).

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

4238978816 is an equidigital number, since it uses as much as digits as its factorization.

4238978816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271528 (or 271514 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The square root of 4238978816 is about 65107.4405578963. The cubic root of 4238978816 is about 1618.4045176829.

The spelling of 4238978816 in words is "four billion, two hundred thirty-eight million, nine hundred seventy-eight thousand, eight hundred sixteen".