18498605 has 4 divisors (see below), whose sum is σ = 22198332. Its totient is φ = 14798880.

The previous prime is 18498583. The next prime is 18498617. The reversal of 18498605 is 50689481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50689481 = 79 ⋅641639.

It can be written as a sum of positive squares in 2 ways, for example, as 6651241 + 11847364 = 2579^2 + 3442^2 .

It is not a de Polignac number, because 18498605 - 2⁸ = 18498349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1849856 + ... + 1849865.

It is an arithmetic number, because the mean of its divisors is an integer number (5549583).

Almost surely, 2^18498605 is an apocalyptic number.

It is an amenable number.

18498605 is a deficient number, since it is larger than the sum of its proper divisors (3699727).

18498605 is an equidigital number, since it uses as much as digits as its factorization.

18498605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699726.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 18498605 is about 4301.0004650081. Note that the first 3 decimals coincide. The cubic root of 18498605 is about 264.4719757617.

It can be divided in two parts, 184 and 98605, that added together give a palindrome (98789).

The spelling of 18498605 in words is "eighteen million, four hundred ninety-eight thousand, six hundred five".