30194473 has 2 divisors, whose sum is σ = 30194474. Its totient is φ = 30194472.

The previous prime is 30194467. The next prime is 30194497. The reversal of 30194473 is 37449103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24472809 + 5721664 = 4947^2 + 2392^2 .

It is an emirp because it is prime and its reverse (37449103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30194473 - 2⁵ = 30194441 is a prime.

It is not a weakly prime, because it can be changed into another prime (30194453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15097236 + 15097237.

It is an arithmetic number, because the mean of its divisors is an integer number (15097237).

Almost surely, 2^30194473 is an apocalyptic number.

It is an amenable number.

30194473 is a deficient number, since it is larger than the sum of its proper divisors (1).

30194473 is an equidigital number, since it uses as much as digits as its factorization.

30194473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30194473 is about 5494.9497722909. The cubic root of 30194473 is about 311.3932192507.

The spelling of 30194473 in words is "thirty million, one hundred ninety-four thousand, four hundred seventy-three".