18129064 has 8 divisors (see below), whose sum is σ = 33992010. Its totient is φ = 9064528.

The previous prime is 18128993. The next prime is 18129071. The reversal of 18129064 is 46092181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 66564 = 4250^2 + 258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1133059 + ... + 1133074.

Almost surely, 2^18129064 is an apocalyptic number.

It is an amenable number.

18129064 is a deficient number, since it is larger than the sum of its proper divisors (15862946).

18129064 is a wasteful number, since it uses less digits than its factorization.

18129064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266139 (or 2266135 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18129064 is about 4257.8238573243. The cubic root of 18129064 is about 262.6990248757.

The spelling of 18129064 in words is "eighteen million, one hundred twenty-nine thousand, sixty-four".