1140687385 has 8 divisors (see below), whose sum is σ = 1373768136. Its totient is φ = 909254400.

The previous prime is 1140687367. The next prime is 1140687397. The reversal of 1140687385 is 5837860411.

It can be written as a sum of positive squares in 4 ways, for example, as 39841344 + 1100846041 = 6312^2 + 33179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1140687385 - 2⁷ = 1140687257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410416 + ... + 413185.

It is an arithmetic number, because the mean of its divisors is an integer number (171721017).

Almost surely, 2^1140687385 is an apocalyptic number.

It is an amenable number.

1140687385 is a deficient number, since it is larger than the sum of its proper divisors (233080751).

1140687385 is an equidigital number, since it uses as much as digits as its factorization.

1140687385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823883.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1140687385 is about 33774.0637916138. The cubic root of 1140687385 is about 1044.8538473746.

The spelling of 1140687385 in words is "one billion, one hundred forty million, six hundred eighty-seven thousand, three hundred eighty-five".