18077023 has 4 divisors (see below), whose sum is σ = 18517968. Its totient is φ = 17636080.

The previous prime is 18077021. The next prime is 18077027. The reversal of 18077023 is 32077081.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18077023 - 2¹ = 18077021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18076982 and 18077000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18077021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220411 + ... + 220492.

It is an arithmetic number, because the mean of its divisors is an integer number (4629492).

Almost surely, 2^18077023 is an apocalyptic number.

18077023 is a deficient number, since it is larger than the sum of its proper divisors (440945).

18077023 is an equidigital number, since it uses as much as digits as its factorization.

18077023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440944.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 18077023 is about 4251.7082449293. The cubic root of 18077023 is about 262.4474174344.

The spelling of 18077023 in words is "eighteen million, seventy-seven thousand, twenty-three".