18498965 has 16 divisors (see below), whose sum is σ = 22837248. Its totient is φ = 14378496.

The previous prime is 18498959. The next prime is 18499007. The reversal of 18498965 is 56989481.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18498965 - 2¹⁸ = 18236821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52229 + ... + 52581.

It is an arithmetic number, because the mean of its divisors is an integer number (1427328).

Almost surely, 2^18498965 is an apocalyptic number.

It is an amenable number.

18498965 is a deficient number, since it is larger than the sum of its proper divisors (4338283).

18498965 is a wasteful number, since it uses less digits than its factorization.

18498965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628.

The product of its digits is 622080, while the sum is 50.

The square root of 18498965 is about 4301.0423155324. The cubic root of 18498965 is about 264.4736913738.

The spelling of 18498965 in words is "eighteen million, four hundred ninety-eight thousand, nine hundred sixty-five".