18454679 has 2 divisors, whose sum is σ = 18454680. Its totient is φ = 18454678.

The previous prime is 18454661. The next prime is 18454687. The reversal of 18454679 is 97645481.

It is a strong prime.

It is an emirp because it is prime and its reverse (97645481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18454679 - 2¹⁶ = 18389143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18454609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9227339 + 9227340.

It is an arithmetic number, because the mean of its divisors is an integer number (9227340).

Almost surely, 2^18454679 is an apocalyptic number.

18454679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18454679 is an equidigital number, since it uses as much as digits as its factorization.

18454679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 18454679 is about 4295.8909436809. The cubic root of 18454679 is about 264.2624752184.

The spelling of 18454679 in words is "eighteen million, four hundred fifty-four thousand, six hundred seventy-nine".