144471638 has 8 divisors (see below), whose sum is σ = 216857088. Its totient is φ = 72185944.

The previous prime is 144471637. The next prime is 144471667. The reversal of 144471638 is 836174441.

It is a happy number.

144471638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144471637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21206 + ... + 27177.

It is an arithmetic number, because the mean of its divisors is an integer number (27107136).

Almost surely, 2^144471638 is an apocalyptic number.

144471638 is a deficient number, since it is larger than the sum of its proper divisors (72385450).

144471638 is a wasteful number, since it uses less digits than its factorization.

144471638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49878.

The product of its digits is 64512, while the sum is 38.

The square root of 144471638 is about 12019.6355186004. The cubic root of 144471638 is about 524.7198965390.

The spelling of 144471638 in words is "one hundred forty-four million, four hundred seventy-one thousand, six hundred thirty-eight".