30199572181 has 2 divisors, whose sum is σ = 30199572182. Its totient is φ = 30199572180.

The previous prime is 30199572167. The next prime is 30199572199. The reversal of 30199572181 is 18127599103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28815062500 + 1384509681 = 169750^2 + 37209^2 .

It is a cyclic number.

It is not a de Polignac number, because 30199572181 - 2²³ = 30191183573 is a prime.

It is a super-2 number, since 2×30199572181² (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 (30199573181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15099786090 + 15099786091.

It is an arithmetic number, because the mean of its divisors is an integer number (15099786091).

Almost surely, 2^30199572181 is an apocalyptic number.

It is an amenable number.

30199572181 is a deficient number, since it is larger than the sum of its proper divisors (1).

30199572181 is an equidigital number, since it uses as much as digits as its factorization.

30199572181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 30199572181 in words is "thirty billion, one hundred ninety-nine million, five hundred seventy-two thousand, one hundred eighty-one".