18097834 has 4 divisors (see below), whose sum is σ = 27146754. Its totient is φ = 9048916.

The previous prime is 18097817. The next prime is 18097889. The reversal of 18097834 is 43879081.

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

It can be written as a sum of positive squares in only one way, i.e., 17614809 + 483025 = 4197^2 + 695^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4524457 + ... + 4524460.

Almost surely, 2^18097834 is an apocalyptic number.

18097834 is a deficient number, since it is larger than the sum of its proper divisors (9048920).

18097834 is an equidigital number, since it uses as much as digits as its factorization.

18097834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048919.

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

The square root of 18097834 is about 4254.1549102025. The cubic root of 18097834 is about 262.5480921712.

The spelling of 18097834 in words is "eighteen million, ninety-seven thousand, eight hundred thirty-four".