30137389 has 2 divisors, whose sum is σ = 30137390. Its totient is φ = 30137388.

The previous prime is 30137357. The next prime is 30137399. The reversal of 30137389 is 98373103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15468489 + 14668900 = 3933^2 + 3830^2 .

It is an emirp because it is prime and its reverse (98373103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30137389 - 2⁵ = 30137357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30137309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15068694 + 15068695.

It is an arithmetic number, because the mean of its divisors is an integer number (15068695).

Almost surely, 2^30137389 is an apocalyptic number.

It is an amenable number.

30137389 is a deficient number, since it is larger than the sum of its proper divisors (1).

30137389 is an equidigital number, since it uses as much as digits as its factorization.

30137389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 30137389 is about 5489.7530909869. The cubic root of 30137389 is about 311.1968611938.

The spelling of 30137389 in words is "thirty million, one hundred thirty-seven thousand, three hundred eighty-nine".