1340360641 has 4 divisors (see below), whose sum is σ = 1349356500. Its totient is φ = 1331364784.

The previous prime is 1340360633. The next prime is 1340360669. The reversal of 1340360641 is 1460630431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 243360000 + 1097000641 = 15600^2 + 33121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340360641 - 2³ = 1340360633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340361641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4497706 + ... + 4498003.

It is an arithmetic number, because the mean of its divisors is an integer number (337339125).

Almost surely, 2^1340360641 is an apocalyptic number.

It is an amenable number.

1340360641 is a deficient number, since it is larger than the sum of its proper divisors (8995859).

1340360641 is an equidigital number, since it uses as much as digits as its factorization.

1340360641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8995858.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1340360641 is about 36610.9360847275. The cubic root of 1340360641 is about 1102.5726673651.

The spelling of 1340360641 in words is "one billion, three hundred forty million, three hundred sixty thousand, six hundred forty-one".