18010911 has 8 divisors (see below), whose sum is σ = 24037120. Its totient is φ = 11995992.

The previous prime is 18010903. The next prime is 18010913. The reversal of 18010911 is 11901081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18010911 - 2³ = 18010903 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 (18010913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2160 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (3004640).

Almost surely, 2^18010911 is an apocalyptic number.

18010911 is a deficient number, since it is larger than the sum of its proper divisors (6026209).

18010911 is a wasteful number, since it uses less digits than its factorization.

18010911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5645.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 18010911 is about 4243.9263659965. The cubic root of 18010911 is about 262.1270822608.

Adding to 18010911 its reverse (11901081), we get a palindrome (29911992).

The spelling of 18010911 in words is "eighteen million, ten thousand, nine hundred eleven".