18995349 has 4 divisors (see below), whose sum is σ = 25327136. Its totient is φ = 12663564.

The previous prime is 18995329. The next prime is 18995351. The reversal of 18995349 is 94359981.

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 18995349 - 2¹² = 18991253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18995298 and 18995307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18995329) 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 3 ways as a sum of consecutive naturals, for example, 3165889 + ... + 3165894.

It is an arithmetic number, because the mean of its divisors is an integer number (6331784).

Almost surely, 2^18995349 is an apocalyptic number.

It is an amenable number.

18995349 is a deficient number, since it is larger than the sum of its proper divisors (6331787).

18995349 is an equidigital number, since it uses as much as digits as its factorization.

18995349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331786.

The product of its digits is 349920, while the sum is 48.

The square root of 18995349 is about 4358.3654045984. The cubic root of 18995349 is about 266.8183898742.

The spelling of 18995349 in words is "eighteen million, nine hundred ninety-five thousand, three hundred forty-nine".