18414413 has 2 divisors, whose sum is σ = 18414414. Its totient is φ = 18414412.

The previous prime is 18414377. The next prime is 18414433. The reversal of 18414413 is 31441481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13410244 + 5004169 = 3662^2 + 2237^2 .

It is a cyclic number.

It is not a de Polignac number, because 18414413 - 2⁸ = 18414157 is a prime.

It is a super-2 number, since 2×18414413² = 678181212269138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18414433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9207206 + 9207207.

It is an arithmetic number, because the mean of its divisors is an integer number (9207207).

Almost surely, 2^18414413 is an apocalyptic number.

It is an amenable number.

18414413 is a deficient number, since it is larger than the sum of its proper divisors (1).

18414413 is an equidigital number, since it uses as much as digits as its factorization.

18414413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 18414413 is about 4291.2018130123. The cubic root of 18414413 is about 264.0701384273.

Adding to 18414413 its reverse (31441481), we get a palindrome (49855894).

The spelling of 18414413 in words is "eighteen million, four hundred fourteen thousand, four hundred thirteen".