1238331888 has 160 divisors (see below), whose sum is σ = 3686510080. Its totient is φ = 402687936.

The previous prime is 1238331881. The next prime is 1238331907. The reversal of 1238331888 is 8881338321.

1238331888 is a `hidden beast` number, since 1 + 238 + 331 + 8 + 88 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238331881) 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 31 ways as a sum of consecutive naturals, for example, 1504245 + ... + 1505067.

It is an arithmetic number, because the mean of its divisors is an integer number (23040688).

Almost surely, 2^1238331888 is an apocalyptic number.

1238331888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1238331888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1843255040).

1238331888 is an abundant number, since it is smaller than the sum of its proper divisors (2448178192).

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

1238331888 is an frugal number, since it uses more digits than its factorization.

1238331888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 871 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 1238331888 is about 35189.9401534018. The cubic root of 1238331888 is about 1073.8551035760.

The spelling of 1238331888 in words is "one billion, two hundred thirty-eight million, three hundred thirty-one thousand, eight hundred eighty-eight".