30197813249 has 2 divisors, whose sum is σ = 30197813250. Its totient is φ = 30197813248.

The previous prime is 30197813231. The next prime is 30197813251. The reversal of 30197813249 is 94231879103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30117172849 + 80640400 = 173543^2 + 8980^2 .

It is an emirp because it is prime and its reverse (94231879103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30197813249 is a prime.

Together with 30197813251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30197803249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15098906624 + 15098906625.

It is an arithmetic number, because the mean of its divisors is an integer number (15098906625).

Almost surely, 2^30197813249 is an apocalyptic number.

It is an amenable number.

30197813249 is a deficient number, since it is larger than the sum of its proper divisors (1).

30197813249 is an equidigital number, since it uses as much as digits as its factorization.

30197813249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 30197813249 in words is "thirty billion, one hundred ninety-seven million, eight hundred thirteen thousand, two hundred forty-nine".