18241849 has 2 divisors, whose sum is σ = 18241850. Its totient is φ = 18241848.

The previous prime is 18241831. The next prime is 18241879. The reversal of 18241849 is 94814281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18147600 + 94249 = 4260^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 18241849 - 2¹¹ = 18239801 is a prime.

It is not a weakly prime, because it can be changed into another prime (18241879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120924 + 9120925.

It is an arithmetic number, because the mean of its divisors is an integer number (9120925).

Almost surely, 2^18241849 is an apocalyptic number.

It is an amenable number.

18241849 is a deficient number, since it is larger than the sum of its proper divisors (1).

18241849 is an equidigital number, since it uses as much as digits as its factorization.

18241849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 37.

The square root of 18241849 is about 4271.0477637226. The cubic root of 18241849 is about 263.2426690322.

The spelling of 18241849 in words is "eighteen million, two hundred forty-one thousand, eight hundred forty-nine".