4238149788 has 36 divisors (see below), whose sum is σ = 10761162048. Its totient is φ = 1406378880.

The previous prime is 4238149781. The next prime is 4238149807. The reversal of 4238149788 is 8879418324.

It is a happy number.

4238149788 is a `hidden beast` number, since 42 + 38 + 1 + 497 + 88 = 666.

4238149788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4238149781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255933 + ... + 271988.

It is an arithmetic number, because the mean of its divisors is an integer number (298921168).

Almost surely, 2^4238149788 is an apocalyptic number.

It is an amenable number.

4238149788 is an abundant number, since it is smaller than the sum of its proper divisors (6523012260).

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

4238149788 is a wasteful number, since it uses less digits than its factorization.

4238149788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528154 (or 528149 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 4238149788 is about 65101.0736316998. The cubic root of 4238149788 is about 1618.2990056249.

The spelling of 4238149788 in words is "four billion, two hundred thirty-eight million, one hundred forty-nine thousand, seven hundred eighty-eight".