30185971199 has 4 divisors (see below), whose sum is σ = 30186928464. Its totient is φ = 30185013936.

The previous prime is 30185971187. The next prime is 30185971223. The reversal of 30185971199 is 99117958103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30185971199 - 2¹² = 30185967103 is a prime.

It is a super-2 number, since 2×30185971199² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30185971199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30185971129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429662 + ... + 494955.

It is an arithmetic number, because the mean of its divisors is an integer number (7546732116).

Almost surely, 2^30185971199 is an apocalyptic number.

30185971199 is a deficient number, since it is larger than the sum of its proper divisors (957265).

30185971199 is an equidigital number, since it uses as much as digits as its factorization.

30185971199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957264.

The product of its (nonzero) digits is 612360, while the sum is 53.

The spelling of 30185971199 in words is "thirty billion, one hundred eighty-five million, nine hundred seventy-one thousand, one hundred ninety-nine".