18669023 has 4 divisors (see below), whose sum is σ = 18719448. Its totient is φ = 18618600.

The previous prime is 18669017. The next prime is 18669029. The reversal of 18669023 is 32096681.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (18669017) and next prime (18669029).

It is a cyclic number.

It is not a de Polignac number, because 18669023 - 2⁶ = 18668959 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18669029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24653 + ... + 25398.

It is an arithmetic number, because the mean of its divisors is an integer number (4679862).

Almost surely, 2^18669023 is an apocalyptic number.

18669023 is a deficient number, since it is larger than the sum of its proper divisors (50425).

18669023 is an equidigital number, since it uses as much as digits as its factorization.

18669023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50424.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 18669023 is about 4320.7664829287. The cubic root of 18669023 is about 265.2816419439.

The spelling of 18669023 in words is "eighteen million, six hundred sixty-nine thousand, twenty-three".