30138037 has 2 divisors, whose sum is σ = 30138038. Its totient is φ = 30138036.

The previous prime is 30138023. The next prime is 30138041. The reversal of 30138037 is 73083103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27468081 + 2669956 = 5241^2 + 1634^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30138037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30138067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15069018 + 15069019.

It is an arithmetic number, because the mean of its divisors is an integer number (15069019).

Almost surely, 2^30138037 is an apocalyptic number.

It is an amenable number.

30138037 is a deficient number, since it is larger than the sum of its proper divisors (1).

30138037 is an equidigital number, since it uses as much as digits as its factorization.

30138037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 30138037 is about 5489.8121097174. The cubic root of 30138037 is about 311.1990915808.

The spelling of 30138037 in words is "thirty million, one hundred thirty-eight thousand, thirty-seven".