17968481 has 2 divisors, whose sum is σ = 17968482. Its totient is φ = 17968480.

The previous prime is 17968463. The next prime is 17968501. The reversal of 17968481 is 18486971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 5683456 = 3505^2 + 2384^2 .

It is a cyclic number.

It is not a de Polignac number, because 17968481 - 2⁶ = 17968417 is a prime.

It is a super-2 number, since 2×17968481² = 645732618894722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17968411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8984240 + 8984241.

It is an arithmetic number, because the mean of its divisors is an integer number (8984241).

Almost surely, 2^17968481 is an apocalyptic number.

It is an amenable number.

17968481 is a deficient number, since it is larger than the sum of its proper divisors (1).

17968481 is an equidigital number, since it uses as much as digits as its factorization.

17968481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 44.

The square root of 17968481 is about 4238.9245098256. The cubic root of 17968481 is about 261.9210812557.

The spelling of 17968481 in words is "seventeen million, nine hundred sixty-eight thousand, four hundred eighty-one".