305012045189 has 2 divisors, whose sum is σ = 305012045190. Its totient is φ = 305012045188.

The previous prime is 305012045167. The next prime is 305012045269. The reversal of 305012045189 is 981540210503.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177866314564 + 127145730625 = 421742^2 + 356575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305012045189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305012041189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152506022594 + 152506022595.

It is an arithmetic number, because the mean of its divisors is an integer number (152506022595).

Almost surely, 2^305012045189 is an apocalyptic number.

It is an amenable number.

305012045189 is a deficient number, since it is larger than the sum of its proper divisors (1).

305012045189 is an equidigital number, since it uses as much as digits as its factorization.

305012045189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 305012045189 in words is "three hundred five billion, twelve million, forty-five thousand, one hundred eighty-nine".