30471757189 has 4 divisors (see below), whose sum is σ = 30567882924. Its totient is φ = 30375631456.

The previous prime is 30471757157. The next prime is 30471757193. The reversal of 30471757189 is 98175717403.

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 2912437089 + 27559320100 = 53967^2 + 166010^2 .

It is a cyclic number.

It is not a de Polignac number, because 30471757189 - 2⁵ = 30471757157 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 (30471757289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48062392 + ... + 48063025.

It is an arithmetic number, because the mean of its divisors is an integer number (7641970731).

Almost surely, 2^30471757189 is an apocalyptic number.

It is an amenable number.

30471757189 is a deficient number, since it is larger than the sum of its proper divisors (96125735).

30471757189 is an equidigital number, since it uses as much as digits as its factorization.

30471757189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96125734.

The product of its (nonzero) digits is 1481760, while the sum is 52.

The spelling of 30471757189 in words is "thirty billion, four hundred seventy-one million, seven hundred fifty-seven thousand, one hundred eighty-nine".