18149017 has 2 divisors, whose sum is σ = 18149018. Its totient is φ = 18149016.

The previous prime is 18148973. The next prime is 18149023. The reversal of 18149017 is 71094181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 6205081 = 3456^2 + 2491^2 .

It is a cyclic number.

It is not a de Polignac number, because 18149017 - 2¹⁹ = 17624729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18149017.

It is not a weakly prime, because it can be changed into another prime (18146017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9074508 + 9074509.

It is an arithmetic number, because the mean of its divisors is an integer number (9074509).

Almost surely, 2^18149017 is an apocalyptic number.

It is an amenable number.

18149017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18149017 is an equidigital number, since it uses as much as digits as its factorization.

18149017 is an odious number, because the sum of its binary digits is odd.

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

The square root of 18149017 is about 4260.1663113076. The cubic root of 18149017 is about 262.7953657904.

The spelling of 18149017 in words is "eighteen million, one hundred forty-nine thousand, seventeen".