181483227390 has 32 divisors (see below), whose sum is σ = 458483944320. Its totient is φ = 45848394144.

The previous prime is 181483227349. The next prime is 181483227391. The reversal of 181483227390 is 93722384181.

It is a happy number.

181483227390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181483227391) 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 15 ways as a sum of consecutive naturals, for example, 159195244 + ... + 159196383.

It is an arithmetic number, because the mean of its divisors is an integer number (14327623260).

Almost surely, 2^181483227390 is an apocalyptic number.

181483227390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181483227390 is an abundant number, since it is smaller than the sum of its proper divisors (277000716930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181483227390 is a wasteful number, since it uses less digits than its factorization.

181483227390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318391656.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 181483227390 in words is "one hundred eighty-one billion, four hundred eighty-three million, two hundred twenty-seven thousand, three hundred ninety".