18006479 has 2 divisors, whose sum is σ = 18006480. Its totient is φ = 18006478.

The previous prime is 18006431. The next prime is 18006481. The reversal of 18006479 is 97460081.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18006479 is a prime.

Together with 18006481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18006979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9003239 + 9003240.

It is an arithmetic number, because the mean of its divisors is an integer number (9003240).

Almost surely, 2^18006479 is an apocalyptic number.

18006479 is a deficient number, since it is larger than the sum of its proper divisors (1).

18006479 is an equidigital number, since it uses as much as digits as its factorization.

18006479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 18006479 is about 4243.4041758946. The cubic root of 18006479 is about 262.1055796924.

The spelling of 18006479 in words is "eighteen million, six thousand, four hundred seventy-nine".