18009463 has 2 divisors, whose sum is σ = 18009464. Its totient is φ = 18009462.

The previous prime is 18009461. The next prime is 18009469. The reversal of 18009463 is 36490081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18009463 - 2¹ = 18009461 is a prime.

Together with 18009461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18009461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004731 + 9004732.

It is an arithmetic number, because the mean of its divisors is an integer number (9004732).

Almost surely, 2^18009463 is an apocalyptic number.

18009463 is a deficient number, since it is larger than the sum of its proper divisors (1).

18009463 is an equidigital number, since it uses as much as digits as its factorization.

18009463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18009463 is about 4243.7557658282. The cubic root of 18009463 is about 262.1200574414.

The spelling of 18009463 in words is "eighteen million, nine thousand, four hundred sixty-three".