144372181 has 8 divisors (see below), whose sum is σ = 147921984. Its totient is φ = 140864640.

The previous prime is 144372161. The next prime is 144372223. The reversal of 144372181 is 181273441.

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 144372181 - 2⁵ = 144372149 is a prime.

It is a super-2 number, since 2×144372181² = 41686653293393522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144372101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3595 + ... + 17368.

It is an arithmetic number, because the mean of its divisors is an integer number (18490248).

Almost surely, 2^144372181 is an apocalyptic number.

It is an amenable number.

144372181 is a deficient number, since it is larger than the sum of its proper divisors (3549803).

144372181 is an equidigital number, since it uses as much as digits as its factorization.

144372181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21131.

The product of its digits is 5376, while the sum is 31.

The square root of 144372181 is about 12015.4975344344. The cubic root of 144372181 is about 524.5994598739.

The spelling of 144372181 in words is "one hundred forty-four million, three hundred seventy-two thousand, one hundred eighty-one".