18097473 has 4 divisors (see below), whose sum is σ = 24129968. Its totient is φ = 12064980.

The previous prime is 18097439. The next prime is 18097493. The reversal of 18097473 is 37479081.

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.

It is not a de Polignac number, because 18097473 - 2⁹ = 18096961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18097423) 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, 3016243 + ... + 3016248.

It is an arithmetic number, because the mean of its divisors is an integer number (6032492).

Almost surely, 2^18097473 is an apocalyptic number.

It is an amenable number.

18097473 is a deficient number, since it is larger than the sum of its proper divisors (6032495).

18097473 is an equidigital number, since it uses as much as digits as its factorization.

18097473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6032494.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 18097473 is about 4254.1124808825. The cubic root of 18097473 is about 262.5463464652.

The spelling of 18097473 in words is "eighteen million, ninety-seven thousand, four hundred seventy-three".