1118149 has 2 divisors, whose sum is σ = 1118150. Its totient is φ = 1118148.

The previous prime is 1118147. The next prime is 1118189. The reversal of 1118149 is 9418111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1117249 + 900 = 1057^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118149 - 2¹ = 1118147 is a prime.

Together with 1118147, it forms a pair of twin primes.

1118149 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559074 + 559075.

It is an arithmetic number, because the mean of its divisors is an integer number (559075).

2^1118149 is an apocalyptic number.

It is an amenable number.

1118149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118149 is an equidigital number, since it uses as much as digits as its factorization.

1118149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 25.

The square root of 1118149 is about 1057.4256475044. The cubic root of 1118149 is about 103.7926403332.

The spelling of 1118149 in words is "one million, one hundred eighteen thousand, one hundred forty-nine".