18418349066 has 96 divisors (see below), whose sum is σ = 33341314608. Its totient is φ = 7591034880.

The previous prime is 18418349063. The next prime is 18418349087. The reversal of 18418349066 is 66094381481.

It can be written as a sum of positive squares in 24 ways, for example, as 7186800625 + 11231548441 = 84775^2 + 105979^2 .

It is not an unprimeable number, because it can be changed into a prime (18418349063) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8715626 + ... + 8717738.

Almost surely, 2^18418349066 is an apocalyptic number.

18418349066 is a deficient number, since it is larger than the sum of its proper divisors (14922965542).

18418349066 is a wasteful number, since it uses less digits than its factorization.

18418349066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 18418349066 in words is "eighteen billion, four hundred eighteen million, three hundred forty-nine thousand, sixty-six".