18180675146 has 16 divisors (see below), whose sum is σ = 27654496200. Its totient is φ = 8963400960.

The previous prime is 18180675133. The next prime is 18180675169. The reversal of 18180675146 is 64157608181.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14579355025 + 3601320121 = 120745^2 + 60011^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18180675146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181835 + ... + 263486.

Almost surely, 2^18180675146 is an apocalyptic number.

18180675146 is a deficient number, since it is larger than the sum of its proper divisors (9473821054).

18180675146 is a wasteful number, since it uses less digits than its factorization.

18180675146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445609.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 18180675146 in words is "eighteen billion, one hundred eighty million, six hundred seventy-five thousand, one hundred forty-six".