1140813405 has 12 divisors (see below), whose sum is σ = 1977409980. Its totient is φ = 608433792.

The previous prime is 1140813379. The next prime is 1140813419. The reversal of 1140813405 is 5043180411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 531809721 + 609003684 = 23061^2 + 24678^2 .

It is not a de Polignac number, because 1140813405 - 2¹⁰ = 1140812381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12675660 + ... + 12675749.

It is an arithmetic number, because the mean of its divisors is an integer number (164784165).

Almost surely, 2^1140813405 is an apocalyptic number.

1140813405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1140813405 is a deficient number, since it is larger than the sum of its proper divisors (836596575).

1140813405 is a wasteful number, since it uses less digits than its factorization.

1140813405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25351420 (or 25351417 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1140813405 is about 33775.9293728537. The cubic root of 1140813405 is about 1044.8923234826.

Adding to 1140813405 its reverse (5043180411), we get a palindrome (6183993816).

The spelling of 1140813405 in words is "one billion, one hundred forty million, eight hundred thirteen thousand, four hundred five".