18466901 has 2 divisors, whose sum is σ = 18466902. Its totient is φ = 18466900.

The previous prime is 18466897. The next prime is 18466937. The reversal of 18466901 is 10966481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 276676 = 4265^2 + 526^2 .

It is an emirp because it is prime and its reverse (10966481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18466901 - 2² = 18466897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18466951) 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, 9233450 + 9233451.

It is an arithmetic number, because the mean of its divisors is an integer number (9233451).

Almost surely, 2^18466901 is an apocalyptic number.

It is an amenable number.

18466901 is a deficient number, since it is larger than the sum of its proper divisors (1).

18466901 is an equidigital number, since it uses as much as digits as its factorization.

18466901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18466901 is about 4297.3132303801. The cubic root of 18466901 is about 264.3208001421.

The spelling of 18466901 in words is "eighteen million, four hundred sixty-six thousand, nine hundred one".