30838091 has 2 divisors, whose sum is σ = 30838092. Its totient is φ = 30838090.

The previous prime is 30838081. The next prime is 30838139. The reversal of 30838091 is 19083803.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30838091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (30838081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15419045 + 15419046.

It is an arithmetic number, because the mean of its divisors is an integer number (15419046).

Almost surely, 2^30838091 is an apocalyptic number.

30838091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30838091 is an equidigital number, since it uses as much as digits as its factorization.

30838091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 30838091 is about 5553.2054707169. The cubic root of 30838091 is about 313.5902094756.

The spelling of 30838091 in words is "thirty million, eight hundred thirty-eight thousand, ninety-one".