30320187809 has 2 divisors, whose sum is σ = 30320187810. Its totient is φ = 30320187808.

The previous prime is 30320187797. The next prime is 30320187817. The reversal of 30320187809 is 90878102303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16165851025 + 14154336784 = 127145^2 + 118972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30320187809 is a prime.

It is not a weakly prime, because it can be changed into another prime (30320187109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160093904 + 15160093905.

It is an arithmetic number, because the mean of its divisors is an integer number (15160093905).

Almost surely, 2^30320187809 is an apocalyptic number.

It is an amenable number.

30320187809 is a deficient number, since it is larger than the sum of its proper divisors (1).

30320187809 is an equidigital number, since it uses as much as digits as its factorization.

30320187809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 30320187809 in words is "thirty billion, three hundred twenty million, one hundred eighty-seven thousand, eight hundred nine".