18083723 has 4 divisors (see below), whose sum is σ = 20667120. Its totient is φ = 15500328.

The previous prime is 18083719. The next prime is 18083743. The reversal of 18083723 is 32738081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32738081 = 37 ⋅884813.

It is a cyclic number.

It is not a de Polignac number, because 18083723 - 2² = 18083719 is a prime.

It is a super-3 number, since 3×18083723³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18083723.

It is not an unprimeable number, because it can be changed into a prime (18083743) 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, 1291688 + ... + 1291701.

It is an arithmetic number, because the mean of its divisors is an integer number (5166780).

Almost surely, 2^18083723 is an apocalyptic number.

18083723 is a deficient number, since it is larger than the sum of its proper divisors (2583397).

18083723 is an equidigital number, since it uses as much as digits as its factorization.

18083723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583396.

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

The square root of 18083723 is about 4252.4960905332. The cubic root of 18083723 is about 262.4798376048.

The spelling of 18083723 in words is "eighteen million, eighty-three thousand, seven hundred twenty-three".