945397189859 has 2 divisors, whose sum is σ = 945397189860. Its totient is φ = 945397189858.

The previous prime is 945397189819. The next prime is 945397189861. The reversal of 945397189859 is 958981793549.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945397189859 is a prime.

Together with 945397189861, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 945397189859.

It is not a weakly prime, because it can be changed into another prime (945397189819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472698594929 + 472698594930.

It is an arithmetic number, because the mean of its divisors is an integer number (472698594930).

Almost surely, 2^945397189859 is an apocalyptic number.

945397189859 is a deficient number, since it is larger than the sum of its proper divisors (1).

945397189859 is an equidigital number, since it uses as much as digits as its factorization.

945397189859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 881798400, while the sum is 77.

The spelling of 945397189859 in words is "nine hundred forty-five billion, three hundred ninety-seven million, one hundred eighty-nine thousand, eight hundred fifty-nine".