16618093 has 2 divisors, whose sum is σ = 16618094. Its totient is φ = 16618092.

The previous prime is 16618051. The next prime is 16618099. The reversal of 16618093 is 39081661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8398404 + 8219689 = 2898^2 + 2867^2 .

It is an emirp because it is prime and its reverse (39081661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16618093 is a prime.

It is a super-2 number, since 2×16618093² = 552322029913298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16618099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8309046 + 8309047.

It is an arithmetic number, because the mean of its divisors is an integer number (8309047).

Almost surely, 2^16618093 is an apocalyptic number.

It is an amenable number.

16618093 is a deficient number, since it is larger than the sum of its proper divisors (1).

16618093 is an equidigital number, since it uses as much as digits as its factorization.

16618093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 16618093 is about 4076.5295289008. The cubic root of 16618093 is about 255.1880862764.

The spelling of 16618093 in words is "sixteen million, six hundred eighteen thousand, ninety-three".