18467973 has 16 divisors (see below), whose sum is σ = 27518400. Its totient is φ = 12240720.

The previous prime is 18467963. The next prime is 18467989. The reversal of 18467973 is 37976481.

It is not a de Polignac number, because 18467973 - 2⁸ = 18467717 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (254016) is a multiple of the sum of its prime factors (3969).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18467963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2998 + ... + 6776.

It is an arithmetic number, because the mean of its divisors is an integer number (1719900).

Almost surely, 2^18467973 is an apocalyptic number.

It is an amenable number.

18467973 is a deficient number, since it is larger than the sum of its proper divisors (9050427).

18467973 is a wasteful number, since it uses less digits than its factorization.

18467973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969 (or 3963 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 18467973 is about 4297.4379576673. The cubic root of 18467973 is about 264.3259146334.

The spelling of 18467973 in words is "eighteen million, four hundred sixty-seven thousand, nine hundred seventy-three".