340808189 has 2 divisors, whose sum is σ = 340808190. Its totient is φ = 340808188.

The previous prime is 340808101. The next prime is 340808257. The reversal of 340808189 is 981808043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282408025 + 58400164 = 16805^2 + 7642^2 .

It is a cyclic number.

It is not a de Polignac number, because 340808189 - 2⁸ = 340807933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340208189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170404094 + 170404095.

It is an arithmetic number, because the mean of its divisors is an integer number (170404095).

Almost surely, 2^340808189 is an apocalyptic number.

It is an amenable number.

340808189 is a deficient number, since it is larger than the sum of its proper divisors (1).

340808189 is an equidigital number, since it uses as much as digits as its factorization.

340808189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 340808189 is about 18460.9910080689. The cubic root of 340808189 is about 698.5057848369.

The spelling of 340808189 in words is "three hundred forty million, eight hundred eight thousand, one hundred eighty-nine".