30138499 has 2 divisors, whose sum is σ = 30138500. Its totient is φ = 30138498.

The previous prime is 30138473. The next prime is 30138509. The reversal of 30138499 is 99483103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30138499 - 2⁷ = 30138371 is a prime.

It is not a weakly prime, because it can be changed into another prime (30138469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15069249 + 15069250.

It is an arithmetic number, because the mean of its divisors is an integer number (15069250).

Almost surely, 2^30138499 is an apocalyptic number.

30138499 is a deficient number, since it is larger than the sum of its proper divisors (1).

30138499 is an equidigital number, since it uses as much as digits as its factorization.

30138499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 30138499 is about 5489.8541874990. The cubic root of 30138499 is about 311.2006817446.

The spelling of 30138499 in words is "thirty million, one hundred thirty-eight thousand, four hundred ninety-nine".