4838438778 has 16 divisors (see below), whose sum is σ = 9767316960. Its totient is φ = 1597739696.

The previous prime is 4838438777. The next prime is 4838438797. The reversal of 4838438778 is 8778348384.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4838438777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3767613 + ... + 3768896.

It is an arithmetic number, because the mean of its divisors is an integer number (610457310).

Almost surely, 2^4838438778 is an apocalyptic number.

4838438778 is an abundant number, since it is smaller than the sum of its proper divisors (4928878182).

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

4838438778 is a wasteful number, since it uses less digits than its factorization.

4838438778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536621.

The product of its digits is 28901376, while the sum is 60.

The square root of 4838438778 is about 69558.8871245077. The cubic root of 4838438778 is about 1691.3562142045.

The spelling of 4838438778 in words is "four billion, eight hundred thirty-eight million, four hundred thirty-eight thousand, seven hundred seventy-eight".