143618 has 4 divisors (see below), whose sum is σ = 215430. Its totient is φ = 71808.

The previous prime is 143617. The next prime is 143629. The reversal of 143618 is 816341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 139129 + 4489 = 373^2 + 67^2 .

It is a super-2 number, since 2×143618² = 41252259848, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 143593 and 143602.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143618.

It is not an unprimeable number, because it can be changed into a prime (143617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35903 + ... + 35906.

2¹⁴³⁶¹⁸ is an apocalyptic number.

143618 is a deficient number, since it is larger than the sum of its proper divisors (71812).

143618 is an equidigital number, since it uses as much as digits as its factorization.

143618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71811.

The product of its digits is 576, while the sum is 23.

The square root of 143618 is about 378.9696557773. The cubic root of 143618 is about 52.3684385429.

Adding to 143618 its sum of digits (23), we get a square (143641 = 379²).

Adding to 143618 its reverse (816341), we get a palindrome (959959).

The spelling of 143618 in words is "one hundred forty-three thousand, six hundred eighteen".