12528958194 has 12 divisors (see below), whose sum is σ = 27146076126. Its totient is φ = 4176319392.

The previous prime is 12528958193. The next prime is 12528958217. The reversal of 12528958194 is 49185982521.

12528958194 is a `hidden beast` number, since 1 + 2 + 52 + 8 + 9 + 581 + 9 + 4 = 666.

12528958194 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12311012025 + 217946169 = 110955^2 + 14763^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12528958194.

It is not an unprimeable number, because it can be changed into a prime (12528958193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 348026599 + ... + 348026634.

Almost surely, 2^12528958194 is an apocalyptic number.

12528958194 is an abundant number, since it is smaller than the sum of its proper divisors (14617117932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12528958194 is a wasteful number, since it uses less digits than its factorization.

12528958194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696053241 (or 696053238 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

The spelling of 12528958194 in words is "twelve billion, five hundred twenty-eight million, nine hundred fifty-eight thousand, one hundred ninety-four".