30180857009 has 2 divisors, whose sum is σ = 30180857010. Its totient is φ = 30180857008.

The previous prime is 30180856999. The next prime is 30180857011. The reversal of 30180857009 is 90075808103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28393935025 + 1786921984 = 168505^2 + 42272^2 .

It is a cyclic number.

It is not a de Polignac number, because 30180857009 - 2⁸ = 30180856753 is a prime.

It is a Sophie Germain prime.

Together with 30180857011, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30180857029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15090428504 + 15090428505.

It is an arithmetic number, because the mean of its divisors is an integer number (15090428505).

Almost surely, 2^30180857009 is an apocalyptic number.

It is an amenable number.

30180857009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30180857009 is an equidigital number, since it uses as much as digits as its factorization.

30180857009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 30180857009 in words is "thirty billion, one hundred eighty million, eight hundred fifty-seven thousand, nine".