30185227808 has 18 divisors (see below), whose sum is σ = 59429102229. Its totient is φ = 15092122496.

The previous prime is 30185227801. The next prime is 30185227823. The reversal of 30185227808 is 80872258103.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 24128030224 + 6057197584 = 155332^2 + 77828^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=122852.

It is a super-2 number, since 2×30185227808² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30185227801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 967460 + ... + 998172.

Almost surely, 2^30185227808 is an apocalyptic number.

It is an amenable number.

30185227808 is a deficient number, since it is larger than the sum of its proper divisors (29243874421).

30185227808 is an frugal number, since it uses more digits than its factorization.

30185227808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61436 (or 30715 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 30185227808 in words is "thirty billion, one hundred eighty-five million, two hundred twenty-seven thousand, eight hundred eight".