30195947 has 2 divisors, whose sum is σ = 30195948. Its totient is φ = 30195946.

The previous prime is 30195937. The next prime is 30195983. The reversal of 30195947 is 74959103.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30195947 - 2¹⁴ = 30179563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30195947.

It is not a weakly prime, because it can be changed into another prime (30195937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15097973 + 15097974.

It is an arithmetic number, because the mean of its divisors is an integer number (15097974).

Almost surely, 2^30195947 is an apocalyptic number.

30195947 is a deficient number, since it is larger than the sum of its proper divisors (1).

30195947 is an equidigital number, since it uses as much as digits as its factorization.

30195947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 30195947 is about 5495.0838938091. The cubic root of 30195947 is about 311.3982862502.

The spelling of 30195947 in words is "thirty million, one hundred ninety-five thousand, nine hundred forty-seven".