186448212078418 has 4 divisors (see below), whose sum is σ = 279672318117630. Its totient is φ = 93224106039208.

The previous prime is 186448212078347. The next prime is 186448212078431. The reversal of 186448212078418 is 814870212844681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 156632058264529 + 29816153813889 = 12515273^2 + 5460417^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 186448212078418.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46612053019603 + ... + 46612053019606.

Almost surely, 2^{186448212078418} is an apocalyptic number.

186448212078418 is a deficient number, since it is larger than the sum of its proper divisors (93224106039212).

186448212078418 is an equidigital number, since it uses as much as digits as its factorization.

186448212078418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93224106039211.

The product of its (nonzero) digits is 44040192, while the sum is 64.

The spelling of 186448212078418 in words is "one hundred eighty-six trillion, four hundred forty-eight billion, two hundred twelve million, seventy-eight thousand, four hundred eighteen".