30470844181 has 2 divisors, whose sum is σ = 30470844182. Its totient is φ = 30470844180.

The previous prime is 30470844163. The next prime is 30470844197. The reversal of 30470844181 is 18144807403.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18460656900 + 12010187281 = 135870^2 + 109591^2 .

It is an emirp because it is prime and its reverse (18144807403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30470844181 is a prime.

It is a super-2 number, since 2×30470844181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30470844101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15235422090 + 15235422091.

It is an arithmetic number, because the mean of its divisors is an integer number (15235422091).

Almost surely, 2^30470844181 is an apocalyptic number.

It is an amenable number.

30470844181 is a deficient number, since it is larger than the sum of its proper divisors (1).

30470844181 is an equidigital number, since it uses as much as digits as its factorization.

30470844181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 30470844181 in words is "thirty billion, four hundred seventy million, eight hundred forty-four thousand, one hundred eighty-one".