345343189 has 2 divisors, whose sum is σ = 345343190. Its totient is φ = 345343188.

The previous prime is 345343181. The next prime is 345343213. The reversal of 345343189 is 981343543.

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., 257602500 + 87740689 = 16050^2 + 9367^2 .

It is an emirp because it is prime and its reverse (981343543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345343189 - 2³ = 345343181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345343181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172671594 + 172671595.

It is an arithmetic number, because the mean of its divisors is an integer number (172671595).

Almost surely, 2^345343189 is an apocalyptic number.

It is an amenable number.

345343189 is a deficient number, since it is larger than the sum of its proper divisors (1).

345343189 is an equidigital number, since it uses as much as digits as its factorization.

345343189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 345343189 is about 18583.4116620173. The cubic root of 345343189 is about 701.5903900424.

The spelling of 345343189 in words is "three hundred forty-five million, three hundred forty-three thousand, one hundred eighty-nine".