18414454417 has 8 divisors (see below), whose sum is σ = 19498871016. Its totient is φ = 17330172672.

The previous prime is 18414454403. The next prime is 18414454439. The reversal of 18414454417 is 71445441481.

It can be written as a sum of positive squares in 4 ways, for example, as 13869537361 + 4544917056 = 117769^2 + 67416^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18414454417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18414454477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428943 + ... + 469915.

It is an arithmetic number, because the mean of its divisors is an integer number (2437358877).

Almost surely, 2^18414454417 is an apocalyptic number.

18414454417 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18414454417 is a deficient number, since it is larger than the sum of its proper divisors (1084416599).

18414454417 is a wasteful number, since it uses less digits than its factorization.

18414454417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67427.

The product of its digits is 286720, while the sum is 43.

Adding to 18414454417 its reverse (71445441481), we get a palindrome (89859895898).

The spelling of 18414454417 in words is "eighteen billion, four hundred fourteen million, four hundred fifty-four thousand, four hundred seventeen".