18232849 has 2 divisors, whose sum is σ = 18232850. Its totient is φ = 18232848.

The previous prime is 18232847. The next prime is 18232853. The reversal of 18232849 is 94823281.

18232849 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15460624 + 2772225 = 3932^2 + 1665^2 .

It is a cyclic number.

It is not a de Polignac number, because 18232849 - 2¹ = 18232847 is a prime.

Together with 18232847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18232843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116424 + 9116425.

It is an arithmetic number, because the mean of its divisors is an integer number (9116425).

Almost surely, 2^18232849 is an apocalyptic number.

It is an amenable number.

18232849 is a deficient number, since it is larger than the sum of its proper divisors (1).

18232849 is an equidigital number, since it uses as much as digits as its factorization.

18232849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 18232849 is about 4269.9940280989. The cubic root of 18232849 is about 263.1993698075.

The spelling of 18232849 in words is "eighteen million, two hundred thirty-two thousand, eight hundred forty-nine".