18133011 has 32 divisors (see below), whose sum is σ = 30464000. Its totient is φ = 10567584.

The previous prime is 18133009. The next prime is 18133019. The reversal of 18133011 is 11033181.

It is a happy number.

It is not a de Polignac number, because 18133011 - 2¹ = 18133009 is a prime.

It is a super-2 number, since 2×18133011² = 657612175852242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18133019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5310 + ... + 8028.

It is an arithmetic number, because the mean of its divisors is an integer number (952000).

Almost surely, 2^18133011 is an apocalyptic number.

18133011 is a deficient number, since it is larger than the sum of its proper divisors (12330989).

18133011 is a wasteful number, since it uses less digits than its factorization.

18133011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760 (or 2754 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 18133011 is about 4258.2873317802. The cubic root of 18133011 is about 262.7180881473.

Adding to 18133011 its reverse (11033181), we get a palindrome (29166192).

The spelling of 18133011 in words is "eighteen million, one hundred thirty-three thousand, eleven".