1188878 has 16 divisors (see below), whose sum is σ = 1918080. Its totient is φ = 550656.

The previous prime is 1188857. The next prime is 1188899. The reversal of 1188878 is 8788811.

It is an interprime number because it is at equal distance from previous prime (1188857) and next prime (1188899).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (119880).

2^1188878 is an apocalyptic number.

1188878 is a deficient number, since it is larger than the sum of its proper divisors (729202).

1188878 is a wasteful number, since it uses less digits than its factorization.

1188878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its digits is 28672, while the sum is 41.

The square root of 1188878 is about 1090.3568223293. The cubic root of 1188878 is about 105.9365349297.

The spelling of 1188878 in words is "one million, one hundred eighty-eight thousand, eight hundred seventy-eight".