1188816 has 20 divisors (see below), whose sum is σ = 3071232. Its totient is φ = 396256.

The previous prime is 1188787. The next prime is 1188839. The reversal of 1188816 is 6188811.

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

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12336 + ... + 12431.

2^1188816 is an apocalyptic number.

1188816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1188816 is an abundant number, since it is smaller than the sum of its proper divisors (1882416).

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

1188816 is a wasteful number, since it uses less digits than its factorization.

1188816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24778 (or 24772 counting only the distinct ones).

The product of its digits is 3072, while the sum is 33.

The square root of 1188816 is about 1090.3283908988. The cubic root of 1188816 is about 105.9346933672.

The spelling of 1188816 in words is "one million, one hundred eighty-eight thousand, eight hundred sixteen".