1340136365 has 8 divisors (see below), whose sum is σ = 1609052928. Its totient is φ = 1071516240.

The previous prime is 1340136341. The next prime is 1340136379. The reversal of 1340136365 is 5636310431.

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

It is not a de Polignac number, because 1340136365 - 2¹⁴ = 1340119981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64037 + ... + 82346.

It is an arithmetic number, because the mean of its divisors is an integer number (201131616).

Almost surely, 2^1340136365 is an apocalyptic number.

It is an amenable number.

1340136365 is a deficient number, since it is larger than the sum of its proper divisors (268916563).

1340136365 is a wasteful number, since it uses less digits than its factorization.

1340136365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148219.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 1340136365 is about 36607.8729920218. The cubic root of 1340136365 is about 1102.5111679016.

Adding to 1340136365 its reverse (5636310431), we get a palindrome (6976446796).

The spelling of 1340136365 in words is "one billion, three hundred forty million, one hundred thirty-six thousand, three hundred sixty-five".