18549895204 has 9 divisors (see below), whose sum is σ = 32462793307. Its totient is φ = 9274811404.

The previous prime is 18549895183. The next prime is 18549895207. The reversal of 18549895204 is 40259894581.

The square root of 18549895204 is 136198.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×18549895204² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18549895207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 238347 + ... + 306445.

Almost surely, 2^18549895204 is an apocalyptic number.

18549895204 is the 136198-th square number.

It is an amenable number.

18549895204 is a deficient number, since it is larger than the sum of its proper divisors (13912898103).

18549895204 is an frugal number, since it uses more digits than its factorization.

18549895204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136202 (or 68101 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 18549895204 in words is "eighteen billion, five hundred forty-nine million, eight hundred ninety-five thousand, two hundred four".