1144144445 has 16 divisors (see below), whose sum is σ = 1386504000. Its totient is φ = 906331008.

The previous prime is 1144144427. The next prime is 1144144447. The reversal of 1144144445 is 5444414411.

It is a cyclic number.

It is not a de Polignac number, because 1144144445 - 2⁶ = 1144144381 is a prime.

It is a super-2 number, since 2×1144144445² = 2618133022048716050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144144447) 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, 289241 + ... + 293169.

It is an arithmetic number, because the mean of its divisors is an integer number (86656500).

Almost surely, 2^1144144445 is an apocalyptic number.

It is an amenable number.

1144144445 is a deficient number, since it is larger than the sum of its proper divisors (242359555).

1144144445 is a wasteful number, since it uses less digits than its factorization.

1144144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492.

The product of its digits is 20480, while the sum is 32.

The square root of 1144144445 is about 33825.2042861532. The cubic root of 1144144445 is about 1045.9083225260.

Adding to 1144144445 its reverse (5444414411), we get a palindrome (6588558856).

The spelling of 1144144445 in words is "one billion, one hundred forty-four million, one hundred forty-four thousand, four hundred forty-five".