1138608888 has 16 divisors (see below), whose sum is σ = 2846522280. Its totient is φ = 379536288.

The previous prime is 1138608883. The next prime is 1138608893. The reversal of 1138608888 is 8888068311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1138608883) and next prime (1138608893).

It is a self number, because there is not a number n which added to its sum of digits gives 1138608888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138608883) 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, 23720995 + ... + 23721042.

Almost surely, 2^1138608888 is an apocalyptic number.

It is an amenable number.

1138608888 is an abundant number, since it is smaller than the sum of its proper divisors (1707913392).

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

1138608888 is a wasteful number, since it uses less digits than its factorization.

1138608888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47442046 (or 47442042 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 51.

The square root of 1138608888 is about 33743.2791530402. The cubic root of 1138608888 is about 1044.2188367022.

The spelling of 1138608888 in words is "one billion, one hundred thirty-eight million, six hundred eight thousand, eight hundred eighty-eight".