16618113 has 6 divisors (see below), whose sum is σ = 24003954. Its totient is φ = 11078736.

The previous prime is 16618111. The next prime is 16618157. The reversal of 16618113 is 31181661.

16618113 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15000129 + 1617984 = 3873^2 + 1272^2 .

It is not a de Polignac number, because 16618113 - 2¹ = 16618111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16618111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 923220 + ... + 923237.

It is an arithmetic number, because the mean of its divisors is an integer number (4000659).

Almost surely, 2^16618113 is an apocalyptic number.

It is an amenable number.

16618113 is a deficient number, since it is larger than the sum of its proper divisors (7385841).

16618113 is a wasteful number, since it uses less digits than its factorization.

16618113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846463 (or 1846460 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 16618113 is about 4076.5319819670. The cubic root of 16618113 is about 255.1881886499.

Adding to 16618113 its reverse (31181661), we get a palindrome (47799774).

The spelling of 16618113 in words is "sixteen million, six hundred eighteen thousand, one hundred thirteen".