18414953 has 2 divisors, whose sum is σ = 18414954. Its totient is φ = 18414952.

The previous prime is 18414941. The next prime is 18415003. The reversal of 18414953 is 35941481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14462809 + 3952144 = 3803^2 + 1988^2 .

It is an emirp because it is prime and its reverse (35941481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18414953 - 2¹⁰ = 18413929 is a prime.

It is a super-3 number, since 3×18414953³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18414353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9207476 + 9207477.

It is an arithmetic number, because the mean of its divisors is an integer number (9207477).

Almost surely, 2^18414953 is an apocalyptic number.

It is an amenable number.

18414953 is a deficient number, since it is larger than the sum of its proper divisors (1).

18414953 is an equidigital number, since it uses as much as digits as its factorization.

18414953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 18414953 is about 4291.2647319875. The cubic root of 18414953 is about 264.0727196750.

The spelling of 18414953 in words is "eighteen million, four hundred fourteen thousand, nine hundred fifty-three".