345146809 has 16 divisors (see below), whose sum is σ = 412837632. Its totient is φ = 282129408.

The previous prime is 345146773. The next prime is 345146827. The reversal of 345146809 is 908641543.

It is not a de Polignac number, because 345146809 - 2⁹ = 345146297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345146849) 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 in 15 ways as a sum of consecutive naturals, for example, 53797 + ... + 59869.

It is an arithmetic number, because the mean of its divisors is an integer number (25802352).

Almost surely, 2^345146809 is an apocalyptic number.

It is an amenable number.

345146809 is a deficient number, since it is larger than the sum of its proper divisors (67690823).

345146809 is a wasteful number, since it uses less digits than its factorization.

345146809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6456.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 345146809 is about 18578.1271661058. The cubic root of 345146809 is about 701.4573779650.

The spelling of 345146809 in words is "three hundred forty-five million, one hundred forty-six thousand, eight hundred nine".