144820618 has 8 divisors (see below), whose sum is σ = 217288260. Its totient is φ = 72391200.

The previous prime is 144820601. The next prime is 144820619. The reversal of 144820618 is 816028441.

It can be written as a sum of positive squares in 2 ways, for example, as 112296409 + 32524209 = 10597^2 + 5703^2 .

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

It is a super-2 number, since 2×144820618² = 41946022795803848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144820619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3468 + ... + 17368.

Almost surely, 2^144820618 is an apocalyptic number.

144820618 is a deficient number, since it is larger than the sum of its proper divisors (72467642).

144820618 is a wasteful number, since it uses less digits than its factorization.

144820618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19112.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 144820618 is about 12034.1438415867. The cubic root of 144820618 is about 525.1420543788.

The spelling of 144820618 in words is "one hundred forty-four million, eight hundred twenty thousand, six hundred eighteen".