181422353 has 6 divisors (see below), whose sum is σ = 211042386. Its totient is φ = 155504832.

The previous prime is 181422349. The next prime is 181422379. The reversal of 181422353 is 353224181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 155950144 + 25472209 = 12488^2 + 5047^2 .

It is not a de Polignac number, because 181422353 - 2² = 181422349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181422343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1851200 + ... + 1851297.

It is an arithmetic number, because the mean of its divisors is an integer number (35173731).

Almost surely, 2^181422353 is an apocalyptic number.

It is an amenable number.

181422353 is a deficient number, since it is larger than the sum of its proper divisors (29620033).

181422353 is an equidigital number, since it uses as much as digits as its factorization.

181422353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702511 (or 3702504 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 181422353 is about 13469.3115265777. The cubic root of 181422353 is about 566.1049231748.

The spelling of 181422353 in words is "one hundred eighty-one million, four hundred twenty-two thousand, three hundred fifty-three".