30717021849 has 8 divisors (see below), whose sum is σ = 41087721792. Its totient is φ = 20412168240.

The previous prime is 30717021809. The next prime is 30717021901. The reversal of 30717021849 is 94812071703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30717021849 - 2⁷ = 30717021721 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 30717021849.

It is not an unprimeable number, because it can be changed into a prime (30717021809) 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 7 ways as a sum of consecutive naturals, for example, 16460494 + ... + 16462359.

It is an arithmetic number, because the mean of its divisors is an integer number (5135965224).

Almost surely, 2^30717021849 is an apocalyptic number.

It is an amenable number.

30717021849 is a deficient number, since it is larger than the sum of its proper divisors (10370699943).

30717021849 is a wasteful number, since it uses less digits than its factorization.

30717021849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32923167.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 30717021849 in words is "thirty billion, seven hundred seventeen million, twenty-one thousand, eight hundred forty-nine".