1188888888 has 48 divisors (see below), whose sum is σ = 3266996040. Its totient is φ = 360268480.

The previous prime is 1188888887. The next prime is 1188888889. The reversal of 1188888888 is 8888888811.

It is an interprime number because it is at equal distance from previous prime (1188888887) and next prime (1188888889).

It is a Harshad number since it is a multiple of its sum of digits (66).

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

1188888888 is a modest number, since divided by 88888 gives 11888 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188888887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201795 + ... + 207602.

Almost surely, 2^1188888888 is an apocalyptic number.

It is an amenable number.

1188888888 is an abundant number, since it is smaller than the sum of its proper divisors (2078107152).

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

1188888888 is a wasteful number, since it uses less digits than its factorization.

1188888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409428 (or 409413 counting only the distinct ones).

The product of its digits is 16777216, while the sum is 66.

The square root of 1188888888 is about 34480.2680964055. The cubic root of 1188888888 is about 1059.3685832523.

The spelling of 1188888888 in words is "one billion, one hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-eight".