18432049 has 2 divisors, whose sum is σ = 18432050. Its totient is φ = 18432048.

The previous prime is 18432047. The next prime is 18432103. The reversal of 18432049 is 94023481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 216225 = 4268^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 18432049 - 2¹ = 18432047 is a prime.

Together with 18432047, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18432049.

It is not a weakly prime, because it can be changed into another prime (18432041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9216024 + 9216025.

It is an arithmetic number, because the mean of its divisors is an integer number (9216025).

Almost surely, 2^18432049 is an apocalyptic number.

It is an amenable number.

18432049 is a deficient number, since it is larger than the sum of its proper divisors (1).

18432049 is an equidigital number, since it uses as much as digits as its factorization.

18432049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 18432049 is about 4293.2562234276. The cubic root of 18432049 is about 264.1544139890.

The spelling of 18432049 in words is "eighteen million, four hundred thirty-two thousand, forty-nine".