18034897 has 4 divisors (see below), whose sum is σ = 18656820. Its totient is φ = 17412976.

The previous prime is 18034879. The next prime is 18034927. The reversal of 18034897 is 79843081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7595536 + 10439361 = 2756^2 + 3231^2 .

It is a cyclic number.

It is not a de Polignac number, because 18034897 - 2⁷ = 18034769 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18034837) 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, 310918 + ... + 310975.

It is an arithmetic number, because the mean of its divisors is an integer number (4664205).

Almost surely, 2^18034897 is an apocalyptic number.

It is an amenable number.

18034897 is a deficient number, since it is larger than the sum of its proper divisors (621923).

18034897 is an equidigital number, since it uses as much as digits as its factorization.

18034897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621922.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 18034897 is about 4246.7513466178. The cubic root of 18034897 is about 262.2433930753.

The spelling of 18034897 in words is "eighteen million, thirty-four thousand, eight hundred ninety-seven".