345189643 has 2 divisors, whose sum is σ = 345189644. Its totient is φ = 345189642.

The previous prime is 345189577. The next prime is 345189659. The reversal of 345189643 is 346981543.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345189643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345189643.

It is not a weakly prime, because it can be changed into another prime (345189043) 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, 172594821 + 172594822.

It is an arithmetic number, because the mean of its divisors is an integer number (172594822).

Almost surely, 2^345189643 is an apocalyptic number.

345189643 is a deficient number, since it is larger than the sum of its proper divisors (1).

345189643 is an equidigital number, since it uses as much as digits as its factorization.

345189643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 345189643 is about 18579.2799376079. The cubic root of 345189643 is about 701.4863945860.

The spelling of 345189643 in words is "three hundred forty-five million, one hundred eighty-nine thousand, six hundred forty-three".