18461323 has 4 divisors (see below), whose sum is σ = 18538168. Its totient is φ = 18384480.

The previous prime is 18461309. The next prime is 18461327. The reversal of 18461323 is 32316481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32316481 = 179 ⋅180539.

It is a cyclic number.

It is not a de Polignac number, because 18461323 - 2⁵ = 18461291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18461291 and 18461300.

It is not an unprimeable number, because it can be changed into a prime (18461327) 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, 38061 + ... + 38542.

It is an arithmetic number, because the mean of its divisors is an integer number (4634542).

Almost surely, 2^18461323 is an apocalyptic number.

18461323 is a deficient number, since it is larger than the sum of its proper divisors (76845).

18461323 is an equidigital number, since it uses as much as digits as its factorization.

18461323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76844.

The product of its digits is 3456, while the sum is 28.

The square root of 18461323 is about 4296.6641711914. The cubic root of 18461323 is about 264.2941844167.

The spelling of 18461323 in words is "eighteen million, four hundred sixty-one thousand, three hundred twenty-three".