1138188 has 12 divisors (see below), whose sum is σ = 2655800. Its totient is φ = 379392.

The previous prime is 1138183. The next prime is 1138213. The reversal of 1138188 is 8818311.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1138183) 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, 47413 + ... + 47436.

2^1138188 is an apocalyptic number.

It is an amenable number.

1138188 is an abundant number, since it is smaller than the sum of its proper divisors (1517612).

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

1138188 is a wasteful number, since it uses less digits than its factorization.

1138188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94856 (or 94854 counting only the distinct ones).

The product of its digits is 1536, while the sum is 30.

The square root of 1138188 is about 1066.8589410039. The cubic root of 1138188 is about 104.4090155306.

It can be divided in two parts, 1138 and 188, that added together give a triangular number (1326 = T₅₁).

The spelling of 1138188 in words is "one million, one hundred thirty-eight thousand, one hundred eighty-eight".