18849270218 has 16 divisors (see below), whose sum is σ = 29174942664. Its totient is φ = 9127645440.

The previous prime is 18849270199. The next prime is 18849270299. The reversal of 18849270218 is 81207294881.

It can be written as a sum of positive squares in 4 ways, for example, as 9561515089 + 9287755129 = 97783^2 + 96373^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 827705 + ... + 850172.

Almost surely, 2^18849270218 is an apocalyptic number.

18849270218 is a deficient number, since it is larger than the sum of its proper divisors (10325672446).

18849270218 is a wasteful number, since it uses less digits than its factorization.

18849270218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678057.

The product of its (nonzero) digits is 516096, while the sum is 50.

The spelling of 18849270218 in words is "eighteen billion, eight hundred forty-nine million, two hundred seventy thousand, two hundred eighteen".