30739157 has 2 divisors, whose sum is σ = 30739158. Its totient is φ = 30739156.

The previous prime is 30739151. The next prime is 30739171. The reversal of 30739157 is 75193703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 6522916 = 4921^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 30739157 - 2⁴ = 30739141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30739151) 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, 15369578 + 15369579.

It is an arithmetic number, because the mean of its divisors is an integer number (15369579).

Almost surely, 2^30739157 is an apocalyptic number.

It is an amenable number.

30739157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30739157 is an equidigital number, since it uses as much as digits as its factorization.

30739157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 30739157 is about 5544.2904866177. The cubic root of 30739157 is about 313.2544994319.

The spelling of 30739157 in words is "thirty million, seven hundred thirty-nine thousand, one hundred fifty-seven".