30643093909 has 2 divisors, whose sum is σ = 30643093910. Its totient is φ = 30643093908.

The previous prime is 30643093903. The next prime is 30643093927. The reversal of 30643093909 is 90939034603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17590716900 + 13052377009 = 132630^2 + 114247^2 .

It is a cyclic number.

It is not a de Polignac number, because 30643093909 - 2²⁹ = 30106222997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30643093903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15321546954 + 15321546955.

It is an arithmetic number, because the mean of its divisors is an integer number (15321546955).

Almost surely, 2^30643093909 is an apocalyptic number.

It is an amenable number.

30643093909 is a deficient number, since it is larger than the sum of its proper divisors (1).

30643093909 is an equidigital number, since it uses as much as digits as its factorization.

30643093909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 46.

The spelling of 30643093909 in words is "thirty billion, six hundred forty-three million, ninety-three thousand, nine hundred nine".