144577138 has 16 divisors (see below), whose sum is σ = 218889216. Its totient is φ = 71617360.

The previous prime is 144577133. The next prime is 144577141. The reversal of 144577138 is 831775441.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 144577138.

It is not an unprimeable number, because it can be changed into a prime (144577133) 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, 131973 + ... + 133063.

It is an arithmetic number, because the mean of its divisors is an integer number (13680576).

Almost surely, 2^144577138 is an apocalyptic number.

144577138 is a deficient number, since it is larger than the sum of its proper divisors (74312078).

144577138 is a wasteful number, since it uses less digits than its factorization.

144577138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649.

The product of its digits is 94080, while the sum is 40.

The square root of 144577138 is about 12024.0233699041. The cubic root of 144577138 is about 524.8475905287.

The spelling of 144577138 in words is "one hundred forty-four million, five hundred seventy-seven thousand, one hundred thirty-eight".