1118771 has 4 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 1114344.

The previous prime is 1118749. The next prime is 1118773. The reversal of 1118771 is 1778111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1118771 - 2¹⁸ = 856627 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1118771.

It is not an unprimeable number, because it can be changed into a prime (1118773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811 + ... + 2348.

It is an arithmetic number, because the mean of its divisors is an integer number (280800).

2^1118771 is an apocalyptic number.

1118771 is a deficient number, since it is larger than the sum of its proper divisors (4429).

1118771 is an equidigital number, since it uses as much as digits as its factorization.

1118771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428.

The product of its digits is 392, while the sum is 26.

The square root of 1118771 is about 1057.7197171274. The cubic root of 1118771 is about 103.8118825674.

The spelling of 1118771 in words is "one million, one hundred eighteen thousand, seven hundred seventy-one".