1340775585 has 24 divisors (see below), whose sum is σ = 2410087680. Its totient is φ = 715079664.

The previous prime is 1340775581. The next prime is 1340775607. The reversal of 1340775585 is 5855770431.

It is a happy number.

It is not a de Polignac number, because 1340775585 - 2² = 1340775581 is a prime.

It is a super-4 number, since 4×1340775585⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1340775585.

It is not an unprimeable number, because it can be changed into a prime (1340775581) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 550545 + ... + 552974.

It is an arithmetic number, because the mean of its divisors is an integer number (100420320).

Almost surely, 2^1340775585 is an apocalyptic number.

1340775585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340775585 is a deficient number, since it is larger than the sum of its proper divisors (1069312095).

1340775585 is an equidigital number, since it uses as much as digits as its factorization.

1340775585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103539 (or 1103527 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 45.

The square root of 1340775585 is about 36616.6025868048. The cubic root of 1340775585 is about 1102.6864324459.

The spelling of 1340775585 in words is "one billion, three hundred forty million, seven hundred seventy-five thousand, five hundred eighty-five".