1144440154 has 32 divisors (see below), whose sum is σ = 2049868800. Its totient is φ = 472305600.

The previous prime is 1144440151. The next prime is 1144440163. The reversal of 1144440154 is 4510444411.

It is not an unprimeable number, because it can be changed into a prime (1144440151) 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, 15354 + ... + 50245.

It is an arithmetic number, because the mean of its divisors is an integer number (64058400).

Almost surely, 2^1144440154 is an apocalyptic number.

1144440154 is a deficient number, since it is larger than the sum of its proper divisors (905428646).

1144440154 is a wasteful number, since it uses less digits than its factorization.

1144440154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65686.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 1144440154 is about 33829.5751377401. The cubic root of 1144440154 is about 1045.9984212497.

Adding to 1144440154 its reverse (4510444411), we get a palindrome (5654884565).

The spelling of 1144440154 in words is "one billion, one hundred forty-four million, four hundred forty thousand, one hundred fifty-four".