144731867 has 16 divisors (see below), whose sum is σ = 169132032. Its totient is φ = 121292640.

The previous prime is 144731849. The next prime is 144731879. The reversal of 144731867 is 768137441.

144731867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144731867 - 2⁸ = 144731611 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144731767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61973 + ... + 64265.

It is an arithmetic number, because the mean of its divisors is an integer number (10570752).

Almost surely, 2^144731867 is an apocalyptic number.

144731867 is a deficient number, since it is larger than the sum of its proper divisors (24400165).

144731867 is a wasteful number, since it uses less digits than its factorization.

144731867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498.

The product of its digits is 112896, while the sum is 41.

The square root of 144731867 is about 12030.4558101512. The cubic root of 144731867 is about 525.0347574872.

The spelling of 144731867 in words is "one hundred forty-four million, seven hundred thirty-one thousand, eight hundred sixty-seven".