1118971 has 4 divisors (see below), whose sum is σ = 1278832. Its totient is φ = 959112.

The previous prime is 1118969. The next prime is 1118987. The reversal of 1118971 is 1798111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1798111 = 7 ⋅256873.

It is not a de Polignac number, because 1118971 - 2¹ = 1118969 is a prime.

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79920 + ... + 79933.

It is an arithmetic number, because the mean of its divisors is an integer number (319708).

2^1118971 is an apocalyptic number.

1118971 is a deficient number, since it is larger than the sum of its proper divisors (159861).

1118971 is an equidigital number, since it uses as much as digits as its factorization.

1118971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159860.

The product of its digits is 504, while the sum is 28.

The square root of 1118971 is about 1057.8142559070. The cubic root of 1118971 is about 103.8180682657.

The spelling of 1118971 in words is "one million, one hundred eighteen thousand, nine hundred seventy-one".