1140644145 has 32 divisors (see below), whose sum is σ = 1847169792. Its totient is φ = 600993792.

The previous prime is 1140644069. The next prime is 1140644179. The reversal of 1140644145 is 5414460411.

It is not a de Polignac number, because 1140644145 - 2¹³ = 1140635953 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1039237 + ... + 1040333.

It is an arithmetic number, because the mean of its divisors is an integer number (57724056).

Almost surely, 2^1140644145 is an apocalyptic number.

1140644145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1140644145 is a deficient number, since it is larger than the sum of its proper divisors (706525647).

1140644145 is a wasteful number, since it uses less digits than its factorization.

1140644145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1140644145 is about 33773.4236493726. The cubic root of 1140644145 is about 1044.8406447940.

The spelling of 1140644145 in words is "one billion, one hundred forty million, six hundred forty-four thousand, one hundred forty-five".