30948927891841 has 4 divisors (see below), whose sum is σ = 31703779791684. Its totient is φ = 30194075992000.

The previous prime is 30948927891823. The next prime is 30948927891881. The reversal of 30948927891841 is 14819872984903.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10163726563600 + 20785201328241 = 3188060^2 + 4559079^2 .

It is a cyclic number.

It is not a de Polignac number, because 30948927891841 - 2¹⁷ = 30948927760769 is a prime.

It is a super-2 number, since 2×30948927891841² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30948927891881) 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, 377425949860 + ... + 377425949941.

It is an arithmetic number, because the mean of its divisors is an integer number (7925944947921).

Almost surely, 2^{30948927891841} is an apocalyptic number.

It is an amenable number.

30948927891841 is a deficient number, since it is larger than the sum of its proper divisors (754851899843).

30948927891841 is an equidigital number, since it uses as much as digits as its factorization.

30948927891841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754851899842.

The product of its (nonzero) digits is 250822656, while the sum is 73.

The spelling of 30948927891841 in words is "thirty trillion, nine hundred forty-eight billion, nine hundred twenty-seven million, eight hundred ninety-one thousand, eight hundred forty-one".