1143918 has 24 divisors (see below), whose sum is σ = 2506608. Its totient is φ = 376992.

The previous prime is 1143893. The next prime is 1143943. The reversal of 1143918 is 8193411.

It is an interprime number because it is at equal distance from previous prime (1143893) and next prime (1143943).

It is a junction number, because it is equal to n+sod(n) for n = 1143891 and 1143900.

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 11 ways as a sum of consecutive naturals, for example, 1546 + ... + 2162.

It is an arithmetic number, because the mean of its divisors is an integer number (104442).

2^1143918 is an apocalyptic number.

1143918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1143918 is an abundant number, since it is smaller than the sum of its proper divisors (1362690).

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

1143918 is a wasteful number, since it uses less digits than its factorization.

1143918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 725 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1143918 is about 1069.5410230562. The cubic root of 1143918 is about 104.5839317155.

The spelling of 1143918 in words is "one million, one hundred forty-three thousand, nine hundred eighteen".