306904345819 has 4 divisors (see below), whose sum is σ = 307000527120. Its totient is φ = 306808164520.

The previous prime is 306904345817. The next prime is 306904345841. The reversal of 306904345819 is 918543409603.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 306904345819 - 2¹ = 306904345817 is a prime.

It is a super-4 number, since 4×306904345819⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306904345817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48085864 + ... + 48092245.

It is an arithmetic number, because the mean of its divisors is an integer number (76750131780).

Almost surely, 2^306904345819 is an apocalyptic number.

306904345819 is a deficient number, since it is larger than the sum of its proper divisors (96181301).

306904345819 is an equidigital number, since it uses as much as digits as its factorization.

306904345819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96181300.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 306904345819 in words is "three hundred six billion, nine hundred four million, three hundred forty-five thousand, eight hundred nineteen".