144621193 has 8 divisors (see below), whose sum is σ = 154646280. Its totient is φ = 134764800.

The previous prime is 144621187. The next prime is 144621199. The reversal of 144621193 is 391126441.

It is an interprime number because it is at equal distance from previous prime (144621187) and next prime (144621199).

It can be written as a sum of positive squares in 4 ways, for example, as 42146064 + 102475129 = 6492^2 + 10123^2 .

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 144621193 - 2⁵ = 144621161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144621199) 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, 40398 + ... + 43831.

It is an arithmetic number, because the mean of its divisors is an integer number (19330785).

Almost surely, 2^144621193 is an apocalyptic number.

It is an amenable number.

144621193 is a deficient number, since it is larger than the sum of its proper divisors (10025087).

144621193 is a wasteful number, since it uses less digits than its factorization.

144621193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84347.

The product of its digits is 5184, while the sum is 31.

The square root of 144621193 is about 12025.8551878858. The cubic root of 144621193 is about 524.9008949740.

The spelling of 144621193 in words is "one hundred forty-four million, six hundred twenty-one thousand, one hundred ninety-three".