144665816 has 16 divisors (see below), whose sum is σ = 271969800. Its totient is φ = 72140544.

The previous prime is 144665813. The next prime is 144665821. The reversal of 144665816 is 618566441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144665813) 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, 20825 + ... + 26888.

Almost surely, 2^144665816 is an apocalyptic number.

It is an amenable number.

144665816 is a deficient number, since it is larger than the sum of its proper divisors (127303984).

144665816 is a wasteful number, since it uses less digits than its factorization.

144665816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48098 (or 48094 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 144665816 is about 12027.7103390462. The cubic root of 144665816 is about 524.9548756379.

The spelling of 144665816 in words is "one hundred forty-four million, six hundred sixty-five thousand, eight hundred sixteen".