1131868 has 24 divisors (see below), whose sum is σ = 2131920. Its totient is φ = 524160.

The previous prime is 1131863. The next prime is 1131869. The reversal of 1131868 is 8681311.

It is a happy number.

It is a super-2 number, since 2×1131868² = 2562250338848, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3888 + ... + 4168.

It is an arithmetic number, because the mean of its divisors is an integer number (88830).

2^1131868 is an apocalyptic number.

It is an amenable number.

1131868 is a deficient number, since it is larger than the sum of its proper divisors (1000052).

1131868 is a wasteful number, since it uses less digits than its factorization.

1131868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 355 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 1131868 is about 1063.8928517478. The cubic root of 1131868 is about 104.2154065953.

The spelling of 1131868 in words is "one million, one hundred thirty-one thousand, eight hundred sixty-eight".