30478138239 has 16 divisors (see below), whose sum is σ = 41309049600. Its totient is φ = 19984545216.

The previous prime is 30478138193. The next prime is 30478138253. The reversal of 30478138239 is 93283187403.

It is not a de Polignac number, because 30478138239 - 2¹¹ = 30478136191 is a prime.

It is a super-4 number, since 4×30478138239⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30478138039) 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, 115209 + ... + 272450.

It is an arithmetic number, because the mean of its divisors is an integer number (2581815600).

Almost surely, 2^30478138239 is an apocalyptic number.

30478138239 is a deficient number, since it is larger than the sum of its proper divisors (10830911361).

30478138239 is a wasteful number, since it uses less digits than its factorization.

30478138239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388094.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 30478138239 in words is "thirty billion, four hundred seventy-eight million, one hundred thirty-eight thousand, two hundred thirty-nine".