30138305837 has 16 divisors (see below), whose sum is σ = 32440699200. Its totient is φ = 27912885120.

The previous prime is 30138305797. The next prime is 30138305839. The reversal of 30138305837 is 73850383103.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30138305837 - 2¹⁰ = 30138304813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30138305794 and 30138305803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30138305839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128633 + ... + 277169.

It is an arithmetic number, because the mean of its divisors is an integer number (2027543700).

Almost surely, 2^30138305837 is an apocalyptic number.

It is an amenable number.

30138305837 is a deficient number, since it is larger than the sum of its proper divisors (2302393363).

30138305837 is a wasteful number, since it uses less digits than its factorization.

30138305837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148796.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 30138305837 in words is "thirty billion, one hundred thirty-eight million, three hundred five thousand, eight hundred thirty-seven".