30129810191 has 16 divisors (see below), whose sum is σ = 34061905920. Its totient is φ = 26458760160.

The previous prime is 30129810169. The next prime is 30129810229. The reversal of 30129810191 is 19101892103.

It is a cyclic number.

It is not a de Polignac number, because 30129810191 - 2¹⁸ = 30129548047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30129810121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609815 + ... + 657368.

It is an arithmetic number, because the mean of its divisors is an integer number (2128869120).

Almost surely, 2^30129810191 is an apocalyptic number.

30129810191 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30129810191 is a deficient number, since it is larger than the sum of its proper divisors (3932095729).

30129810191 is a wasteful number, since it uses less digits than its factorization.

30129810191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267286.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 30129810191 in words is "thirty billion, one hundred twenty-nine million, eight hundred ten thousand, one hundred ninety-one".