18941017 has 2 divisors, whose sum is σ = 18941018. Its totient is φ = 18941016.

The previous prime is 18941011. The next prime is 18941023. The reversal of 18941017 is 71014981.

It is a balanced prime because it is at equal distance from previous prime (18941011) and next prime (18941023).

It can be written as a sum of positive squares in only one way, i.e., 12845056 + 6095961 = 3584^2 + 2469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18941017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18941017.

It is not a weakly prime, because it can be changed into another prime (18941011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9470508 + 9470509.

It is an arithmetic number, because the mean of its divisors is an integer number (9470509).

Almost surely, 2^18941017 is an apocalyptic number.

It is an amenable number.

18941017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18941017 is an equidigital number, since it uses as much as digits as its factorization.

18941017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 18941017 is about 4352.1278703641. The cubic root of 18941017 is about 266.5637552550.

Adding to 18941017 its reverse (71014981), we get a palindrome (89955998).

The spelling of 18941017 in words is "eighteen million, nine hundred forty-one thousand, seventeen".