1100018 has 4 divisors (see below), whose sum is σ = 1650030. Its totient is φ = 550008.

The previous prime is 1100009. The next prime is 1100023. The reversal of 1100018 is 8100011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8100011 = 1277 ⋅6343.

It can be written as a sum of positive squares in only one way, i.e., 1075369 + 24649 = 1037^2 + 157^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1099981 and 1100008.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275003 + ... + 275006.

2^1100018 is an apocalyptic number.

1100018 is a deficient number, since it is larger than the sum of its proper divisors (550012).

1100018 is an equidigital number, since it uses as much as digits as its factorization.

1100018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550011.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1100018 is about 1048.8174292984. The cubic root of 1100018 is about 103.2285746044.

Adding to 1100018 its reverse (8100011), we get a palindrome (9200029).

The spelling of 1100018 in words is "one million, one hundred thousand, eighteen".