144681473 has 4 divisors (see below), whose sum is σ = 144901680. Its totient is φ = 144461268.

The previous prime is 144681437. The next prime is 144681479. The reversal of 144681473 is 374186441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144681473 - 2¹⁶ = 144615937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144681479) 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, 109115 + ... + 110432.

It is an arithmetic number, because the mean of its divisors is an integer number (36225420).

Almost surely, 2^144681473 is an apocalyptic number.

It is an amenable number.

144681473 is a deficient number, since it is larger than the sum of its proper divisors (220207).

144681473 is an equidigital number, since it uses as much as digits as its factorization.

144681473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220206.

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

The square root of 144681473 is about 12028.3611934461. The cubic root of 144681473 is about 524.9738133575.

The spelling of 144681473 in words is "one hundred forty-four million, six hundred eighty-one thousand, four hundred seventy-three".