181422453 has 8 divisors (see below), whose sum is σ = 256125888. Its totient is φ = 113833664.

The previous prime is 181422427. The next prime is 181422467. The reversal of 181422453 is 354224181.

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

It is a cyclic number.

It is not a de Polignac number, because 181422453 - 2²¹ = 179325301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 181422453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181422403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778601 + ... + 1778702.

It is an arithmetic number, because the mean of its divisors is an integer number (32015736).

Almost surely, 2^181422453 is an apocalyptic number.

It is an amenable number.

181422453 is a deficient number, since it is larger than the sum of its proper divisors (74703435).

181422453 is a wasteful number, since it uses less digits than its factorization.

181422453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557323.

The product of its digits is 7680, while the sum is 30.

The square root of 181422453 is about 13469.3152387195. The cubic root of 181422453 is about 566.1050271871.

The spelling of 181422453 in words is "one hundred eighty-one million, four hundred twenty-two thousand, four hundred fifty-three".