18316011 has 16 divisors (see below), whose sum is σ = 27972864. Its totient is φ = 10442784.

The previous prime is 18316007. The next prime is 18316013. The reversal of 18316011 is 11061381.

It is not a de Polignac number, because 18316011 - 2² = 18316007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (18316013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13705 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (1748304).

Almost surely, 2^18316011 is an apocalyptic number.

18316011 is a deficient number, since it is larger than the sum of its proper divisors (9656853).

18316011 is a wasteful number, since it uses less digits than its factorization.

18316011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 18316011 is about 4279.7209021150. The cubic root of 18316011 is about 263.5989232350.

Adding to 18316011 its reverse (11061381), we get a palindrome (29377392).

The spelling of 18316011 in words is "eighteen million, three hundred sixteen thousand, eleven".