18752417 has 2 divisors, whose sum is σ = 18752418. Its totient is φ = 18752416.

The previous prime is 18752413. The next prime is 18752431. The reversal of 18752417 is 71425781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17007376 + 1745041 = 4124^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 18752417 - 2² = 18752413 is a prime.

It is not a weakly prime, because it can be changed into another prime (18752413) 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, 9376208 + 9376209.

It is an arithmetic number, because the mean of its divisors is an integer number (9376209).

Almost surely, 2^18752417 is an apocalyptic number.

It is an amenable number.

18752417 is a deficient number, since it is larger than the sum of its proper divisors (1).

18752417 is an equidigital number, since it uses as much as digits as its factorization.

18752417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15680, while the sum is 35.

The square root of 18752417 is about 4330.4061010487. The cubic root of 18752417 is about 265.6760571197.

The spelling of 18752417 in words is "eighteen million, seven hundred fifty-two thousand, four hundred seventeen".