1144511405 has 16 divisors (see below), whose sum is σ = 1385475840. Its totient is φ = 907589568.

The previous prime is 1144511399. The next prime is 1144511471. The reversal of 1144511405 is 5041154411.

It is a cyclic number.

It is not a de Polignac number, because 1144511405 - 2³⁰ = 70769581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765839 + ... + 767331.

It is an arithmetic number, because the mean of its divisors is an integer number (86592240).

Almost surely, 2^1144511405 is an apocalyptic number.

It is an amenable number.

1144511405 is a deficient number, since it is larger than the sum of its proper divisors (240964435).

1144511405 is a wasteful number, since it uses less digits than its factorization.

1144511405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 1144511405 is about 33830.6282087696. The cubic root of 1144511405 is about 1046.0201281914.

Adding to 1144511405 its reverse (5041154411), we get a palindrome (6185665816).

The spelling of 1144511405 in words is "one billion, one hundred forty-four million, five hundred eleven thousand, four hundred five".