1188385 has 32 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 768000.

The previous prime is 1188377. The next prime is 1188389. The reversal of 1188385 is 5838811.

1188385 is nontrivially palindromic in base 4 and base 16.

It is not a de Polignac number, because 1188385 - 2³ = 1188377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1188385.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28965 + ... + 29005.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2^1188385 is an apocalyptic number.

It is an amenable number.

1188385 is a deficient number, since it is larger than the sum of its proper divisors (553439).

1188385 is a wasteful number, since it uses less digits than its factorization.

1188385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105.

The product of its digits is 7680, while the sum is 34.

The square root of 1188385 is about 1090.1307261058. The cubic root of 1188385 is about 105.9218897678.

The spelling of 1188385 in words is "one million, one hundred eighty-eight thousand, three hundred eighty-five".