1118913 has 4 divisors (see below), whose sum is σ = 1491888. Its totient is φ = 745940.

The previous prime is 1118911. The next prime is 1118921. The reversal of 1118913 is 3198111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1118913 - 2¹ = 1118911 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1118911) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 186483 + ... + 186488.

It is an arithmetic number, because the mean of its divisors is an integer number (372972).

2^1118913 is an apocalyptic number.

It is an amenable number.

1118913 is a deficient number, since it is larger than the sum of its proper divisors (372975).

1118913 is an equidigital number, since it uses as much as digits as its factorization.

1118913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372974.

The product of its digits is 216, while the sum is 24.

The square root of 1118913 is about 1057.7868405307. The cubic root of 1118913 is about 103.8162744891.

The spelling of 1118913 in words is "one million, one hundred eighteen thousand, nine hundred thirteen".