1140873665 has 12 divisors (see below), whose sum is σ = 1379227836. Its totient is φ = 905962368.

The previous prime is 1140873661. The next prime is 1140873691. The reversal of 1140873665 is 5663780411.

It can be written as a sum of positive squares in 6 ways, for example, as 79156609 + 1061717056 = 8897^2 + 32584^2 .

It is not a de Polignac number, because 1140873665 - 2² = 1140873661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140873661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87767 + ... + 99923.

It is an arithmetic number, because the mean of its divisors is an integer number (114935653).

Almost surely, 2^1140873665 is an apocalyptic number.

It is an amenable number.

1140873665 is a deficient number, since it is larger than the sum of its proper divisors (238354171).

1140873665 is an equidigital number, since it uses as much as digits as its factorization.

1140873665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12436 (or 12299 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1140873665 is about 33776.8214164684. The cubic root of 1140873665 is about 1044.9107209122.

The spelling of 1140873665 in words is "one billion, one hundred forty million, eight hundred seventy-three thousand, six hundred sixty-five".