181425630319 has 2 divisors, whose sum is σ = 181425630320. Its totient is φ = 181425630318.

The previous prime is 181425630313. The next prime is 181425630349. The reversal of 181425630319 is 913036524181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 181425630319 - 2²⁷ = 181291412591 is a prime.

It is a super-2 number, since 2×181425630319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181425630313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90712815159 + 90712815160.

It is an arithmetic number, because the mean of its divisors is an integer number (90712815160).

Almost surely, 2^181425630319 is an apocalyptic number.

181425630319 is a deficient number, since it is larger than the sum of its proper divisors (1).

181425630319 is an equidigital number, since it uses as much as digits as its factorization.

181425630319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 181425630319 in words is "one hundred eighty-one billion, four hundred twenty-five million, six hundred thirty thousand, three hundred nineteen".