144644146 has 8 divisors (see below), whose sum is σ = 222258204. Its totient is φ = 70558080.

The previous prime is 144644117. The next prime is 144644153. The reversal of 144644146 is 641446441.

It can be written as a sum of positive squares in 2 ways, for example, as 141871921 + 2772225 = 11911^2 + 1665^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881895 + ... + 882058.

Almost surely, 2^144644146 is an apocalyptic number.

144644146 is a deficient number, since it is larger than the sum of its proper divisors (77614058).

144644146 is a wasteful number, since it uses less digits than its factorization.

144644146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763996.

The product of its digits is 36864, while the sum is 34.

The square root of 144644146 is about 12026.8094688492. The cubic root of 144644146 is about 524.9286627183.

The spelling of 144644146 in words is "one hundred forty-four million, six hundred forty-four thousand, one hundred forty-six".