1181888 has 28 divisors (see below), whose sum is σ = 2392680. Its totient is φ = 579072.

The previous prime is 1181881. The next prime is 1181893. The reversal of 1181888 is 8881811.

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

It is not an unprimeable number, because it can be changed into a prime (1181881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3620 + ... + 3932.

2^1181888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1181888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1196340).

1181888 is an abundant number, since it is smaller than the sum of its proper divisors (1210792).

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

1181888 is an equidigital number, since it uses as much as digits as its factorization.

1181888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 374 counting only the distinct ones).

The product of its digits is 4096, while the sum is 35.

The square root of 1181888 is about 1087.1467242282. The cubic root of 1181888 is about 105.7285089910.

It can be divided in two parts, 118 and 1888, that multiplied together give a square (222784 = 472²).

The spelling of 1181888 in words is "one million, one hundred eighty-one thousand, eight hundred eighty-eight".