18073297 has 4 divisors (see below), whose sum is σ = 19716336. Its totient is φ = 16430260.

The previous prime is 18073291. The next prime is 18073309. The reversal of 18073297 is 79237081.

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 18073297 - 2¹⁹ = 17549009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18073291) 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, 821503 + ... + 821524.

It is an arithmetic number, because the mean of its divisors is an integer number (4929084).

Almost surely, 2^18073297 is an apocalyptic number.

It is an amenable number.

18073297 is a deficient number, since it is larger than the sum of its proper divisors (1643039).

18073297 is a wasteful number, since it uses less digits than its factorization.

18073297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643038.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 18073297 is about 4251.2700455276. The cubic root of 18073297 is about 262.4293844823.

The spelling of 18073297 in words is "eighteen million, seventy-three thousand, two hundred ninety-seven".