181822242057 has 8 divisors (see below), whose sum is σ = 243578612640. Its totient is φ = 120640349760.

The previous prime is 181822242029. The next prime is 181822242067. The reversal of 181822242057 is 750242228181.

It is a happy number.

181822242057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 181822242057 - 2⁷ = 181822241929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (181822242067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143618832 + ... + 143620097.

It is an arithmetic number, because the mean of its divisors is an integer number (30447326580).

Almost surely, 2^181822242057 is an apocalyptic number.

It is an amenable number.

181822242057 is a deficient number, since it is larger than the sum of its proper divisors (61756370583).

181822242057 is a wasteful number, since it uses less digits than its factorization.

181822242057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287239143.

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 181822242057 in words is "one hundred eighty-one billion, eight hundred twenty-two million, two hundred forty-two thousand, fifty-seven".