1158812 has 12 divisors (see below), whose sum is σ = 2039016. Its totient is φ = 576240.

The previous prime is 1158799. The next prime is 1158821. The reversal of 1158812 is 2188511.

1158812 is nontrivially palindromic in base 8.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158 + ... + 1530.

It is an arithmetic number, because the mean of its divisors is an integer number (169918).

2^1158812 is an apocalyptic number.

It is an amenable number.

1158812 is a deficient number, since it is larger than the sum of its proper divisors (880204).

1158812 is a wasteful number, since it uses less digits than its factorization.

1158812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1586 counting only the distinct ones).

The product of its digits is 640, while the sum is 26.

The square root of 1158812 is about 1076.4813049933. The cubic root of 1158812 is about 105.0358758737.

The spelling of 1158812 in words is "one million, one hundred fifty-eight thousand, eight hundred twelve".