30138047357 has 4 divisors (see below), whose sum is σ = 32877869856. Its totient is φ = 27398224860.

The previous prime is 30138047351. The next prime is 30138047371. The reversal of 30138047357 is 75374083103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75374083103 = 11 ⋅6852189373.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30138047357 is a prime.

It is a super-3 number, since 3×30138047357³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30138047351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369911233 + ... + 1369911254.

It is an arithmetic number, because the mean of its divisors is an integer number (8219467464).

Almost surely, 2^30138047357 is an apocalyptic number.

It is an amenable number.

30138047357 is a deficient number, since it is larger than the sum of its proper divisors (2739822499).

30138047357 is a wasteful number, since it uses less digits than its factorization.

30138047357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739822498.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 30138047357 in words is "thirty billion, one hundred thirty-eight million, forty-seven thousand, three hundred fifty-seven".