18180324146 has 8 divisors (see below), whose sum is σ = 27276494700. Its totient is φ = 9088159248.

The previous prime is 18180324131. The next prime is 18180324163. The reversal of 18180324146 is 64142308181.

It can be written as a sum of positive squares in 2 ways, for example, as 14958513025 + 3221811121 = 122305^2 + 56761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 990041 + ... + 1008236.

Almost surely, 2^18180324146 is an apocalyptic number.

18180324146 is a deficient number, since it is larger than the sum of its proper divisors (9096170554).

18180324146 is a wasteful number, since it uses less digits than its factorization.

18180324146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002828.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 18180324146 in words is "eighteen billion, one hundred eighty million, three hundred twenty-four thousand, one hundred forty-six".