11238488838 has 48 divisors (see below), whose sum is σ = 25160518656. Its totient is φ = 3621717360.

The previous prime is 11238488837. The next prime is 11238488839. The reversal of 11238488838 is 83888483211.

11238488838 is a `hidden beast` number, since 1 + 123 + 8 + 488 + 8 + 38 = 666.

It is an interprime number because it is at equal distance from previous prime (11238488837) and next prime (11238488839).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11238488837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 583681 + ... + 602627.

It is an arithmetic number, because the mean of its divisors is an integer number (524177472).

Almost surely, 2^11238488838 is an apocalyptic number.

11238488838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11238488838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12580259328).

11238488838 is an abundant number, since it is smaller than the sum of its proper divisors (13922029818).

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

11238488838 is a wasteful number, since it uses less digits than its factorization.

11238488838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20049 (or 20046 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The spelling of 11238488838 in words is "eleven billion, two hundred thirty-eight million, four hundred eighty-eight thousand, eight hundred thirty-eight".