17818049 has 2 divisors, whose sum is σ = 17818050. Its totient is φ = 17818048.

The previous prime is 17818037. The next prime is 17818051. The reversal of 17818049 is 94081871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 7059649 = 3280^2 + 2657^2 .

It is a cyclic number.

It is not a de Polignac number, because 17818049 - 2⁴ = 17818033 is a prime.

Together with 17818051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17818069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8909024 + 8909025.

It is an arithmetic number, because the mean of its divisors is an integer number (8909025).

Almost surely, 2^17818049 is an apocalyptic number.

It is an amenable number.

17818049 is a deficient number, since it is larger than the sum of its proper divisors (1).

17818049 is an equidigital number, since it uses as much as digits as its factorization.

17818049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 17818049 is about 4221.1430916281. The cubic root of 17818049 is about 261.1880980907.

The spelling of 17818049 in words is "seventeen million, eight hundred eighteen thousand, forty-nine".