18830723 has 2 divisors, whose sum is σ = 18830724. Its totient is φ = 18830722.

The previous prime is 18830711. The next prime is 18830759. The reversal of 18830723 is 32703881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18830723 - 2¹⁴ = 18814339 is a prime.

It is a super-2 number, since 2×18830723² = 709192257405458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18830723.

It is not a weakly prime, because it can be changed into another prime (18830783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9415361 + 9415362.

It is an arithmetic number, because the mean of its divisors is an integer number (9415362).

Almost surely, 2^18830723 is an apocalyptic number.

18830723 is a deficient number, since it is larger than the sum of its proper divisors (1).

18830723 is an equidigital number, since it uses as much as digits as its factorization.

18830723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18830723 is about 4339.4380972656. The cubic root of 18830723 is about 266.0453453138.

The spelling of 18830723 in words is "eighteen million, eight hundred thirty thousand, seven hundred twenty-three".