18496873 has 4 divisors (see below), whose sum is σ = 18506880. Its totient is φ = 18486868.

The previous prime is 18496871. The next prime is 18496879. The reversal of 18496873 is 37869481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37869481 = 13 ⋅2913037.

It is a cyclic number.

It is not a de Polignac number, because 18496873 - 2¹ = 18496871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18496871) 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 in 3 ways as a sum of consecutive naturals, for example, 1333 + ... + 6226.

It is an arithmetic number, because the mean of its divisors is an integer number (4626720).

Almost surely, 2^18496873 is an apocalyptic number.

It is an amenable number.

18496873 is a deficient number, since it is larger than the sum of its proper divisors (10007).

18496873 is an equidigital number, since it uses as much as digits as its factorization.

18496873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006.

The product of its digits is 290304, while the sum is 46.

The square root of 18496873 is about 4300.7991117931. The cubic root of 18496873 is about 264.4637214499.

The spelling of 18496873 in words is "eighteen million, four hundred ninety-six thousand, eight hundred seventy-three".