144189818 has 16 divisors (see below), whose sum is σ = 229970664. Its totient is φ = 67568640.

The previous prime is 144189817. The next prime is 144189823. The reversal of 144189818 is 818981441.

144189818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 119617969 + 24571849 = 10937^2 + 4957^2 .

It is a super-2 number, since 2×144189818² = 41581407229746248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144189817) 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, 605 + ... + 16992.

Almost surely, 2^144189818 is an apocalyptic number.

144189818 is a deficient number, since it is larger than the sum of its proper divisors (85780846).

144189818 is a wasteful number, since it uses less digits than its factorization.

144189818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17857.

The product of its digits is 73728, while the sum is 44.

The square root of 144189818 is about 12007.9064786498. The cubic root of 144189818 is about 524.3784850767.

The spelling of 144189818 in words is "one hundred forty-four million, one hundred eighty-nine thousand, eight hundred eighteen".