30845057989 has 2 divisors, whose sum is σ = 30845057990. Its totient is φ = 30845057988.

The previous prime is 30845057977. The next prime is 30845058011. The reversal of 30845057989 is 98975054803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28850721025 + 1994336964 = 169855^2 + 44658^2 .

It is an emirp because it is prime and its reverse (98975054803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30845057989 - 2¹³ = 30845049797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30845058989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15422528994 + 15422528995.

It is an arithmetic number, because the mean of its divisors is an integer number (15422528995).

Almost surely, 2^30845057989 is an apocalyptic number.

It is an amenable number.

30845057989 is a deficient number, since it is larger than the sum of its proper divisors (1).

30845057989 is an equidigital number, since it uses as much as digits as its factorization.

30845057989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 30845057989 in words is "thirty billion, eight hundred forty-five million, fifty-seven thousand, nine hundred eighty-nine".