181425630313 has 2 divisors, whose sum is σ = 181425630314. Its totient is φ = 181425630312.

The previous prime is 181425630301. The next prime is 181425630319. The reversal of 181425630313 is 313036524181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120351404889 + 61074225424 = 346917^2 + 247132^2 .

It is a cyclic number.

It is not a de Polignac number, because 181425630313 - 2²⁵ = 181392075881 is a prime.

It is not a weakly prime, because it can be changed into another prime (181425630319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90712815156 + 90712815157.

It is an arithmetic number, because the mean of its divisors is an integer number (90712815157).

Almost surely, 2^181425630313 is an apocalyptic number.

It is an amenable number.

181425630313 is a deficient number, since it is larger than the sum of its proper divisors (1).

181425630313 is an equidigital number, since it uses as much as digits as its factorization.

181425630313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 181425630313 in words is "one hundred eighty-one billion, four hundred twenty-five million, six hundred thirty thousand, three hundred thirteen".