1118644 has 24 divisors (see below), whose sum is σ = 2116800. Its totient is φ = 515520.

The previous prime is 1118629. The next prime is 1118653. The reversal of 1118644 is 4468111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937 + ... + 3295.

It is an arithmetic number, because the mean of its divisors is an integer number (88200).

2^1118644 is an apocalyptic number.

It is an amenable number.

1118644 is a deficient number, since it is larger than the sum of its proper divisors (998156).

1118644 is a wasteful number, since it uses less digits than its factorization.

1118644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 421 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 1118644 is about 1057.6596806157. The cubic root of 1118644 is about 103.8079542664.

The spelling of 1118644 in words is "one million, one hundred eighteen thousand, six hundred forty-four".