18226001 has 2 divisors, whose sum is σ = 18226002. Its totient is φ = 18226000.

The previous prime is 18225979. The next prime is 18226031. The reversal of 18226001 is 10062281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17648401 + 577600 = 4201^2 + 760^2 .

It is an emirp because it is prime and its reverse (10062281) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18226001 is a prime.

It is a super-2 number, since 2×18226001² = 664374224904002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18226031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9113000 + 9113001.

It is an arithmetic number, because the mean of its divisors is an integer number (9113001).

Almost surely, 2^18226001 is an apocalyptic number.

It is an amenable number.

18226001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18226001 is an equidigital number, since it uses as much as digits as its factorization.

18226001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 18226001 is about 4269.1920781338. The cubic root of 18226001 is about 263.1664143621.

Adding to 18226001 its reverse (10062281), we get a palindrome (28288282).

The spelling of 18226001 in words is "eighteen million, two hundred twenty-six thousand, one".