18670723 has 2 divisors, whose sum is σ = 18670724. Its totient is φ = 18670722.

The previous prime is 18670721. The next prime is 18670741. The reversal of 18670723 is 32707681.

It is a weak prime.

It is an emirp because it is prime and its reverse (32707681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18670723 - 2¹ = 18670721 is a prime.

Together with 18670721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18670721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9335361 + 9335362.

It is an arithmetic number, because the mean of its divisors is an integer number (9335362).

Almost surely, 2^18670723 is an apocalyptic number.

18670723 is a deficient number, since it is larger than the sum of its proper divisors (1).

18670723 is an equidigital number, since it uses as much as digits as its factorization.

18670723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 18670723 is about 4320.9632028056. The cubic root of 18670723 is about 265.2896938757.

The spelling of 18670723 in words is "eighteen million, six hundred seventy thousand, seven hundred twenty-three".