1118151 has 8 divisors (see below), whose sum is σ = 1656560. Its totient is φ = 745416.

The previous prime is 1118149. The next prime is 1118189. The reversal of 1118151 is 1518111.

It is a happy number.

It is not a de Polignac number, because 1118151 - 2¹ = 1118149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118101) 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 7 ways as a sum of consecutive naturals, for example, 20680 + ... + 20733.

It is an arithmetic number, because the mean of its divisors is an integer number (207070).

2^1118151 is an apocalyptic number.

1118151 is a deficient number, since it is larger than the sum of its proper divisors (538409).

1118151 is an equidigital number, since it uses as much as digits as its factorization.

1118151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41422 (or 41416 counting only the distinct ones).

The product of its digits is 40, while the sum is 18.

The square root of 1118151 is about 1057.4265931969. The cubic root of 1118151 is about 103.7927022167.

Subtracting from 1118151 its product of digits (40), we obtain a palindrome (1118111).

The spelling of 1118151 in words is "one million, one hundred eighteen thousand, one hundred fifty-one".