1340329109 has 4 divisors (see below), whose sum is σ = 1531804704. Its totient is φ = 1148853516.

The previous prime is 1340329093. The next prime is 1340329139. The reversal of 1340329109 is 9019230431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9019230431 = 6569 ⋅1372999.

It is a cyclic number.

It is not a de Polignac number, because 1340329109 - 2⁴ = 1340329093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340329139) 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, 95737787 + ... + 95737800.

It is an arithmetic number, because the mean of its divisors is an integer number (382951176).

Almost surely, 2^1340329109 is an apocalyptic number.

It is an amenable number.

1340329109 is a deficient number, since it is larger than the sum of its proper divisors (191475595).

1340329109 is an equidigital number, since it uses as much as digits as its factorization.

1340329109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191475594.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1340329109 is about 36610.5054458416. The cubic root of 1340329109 is about 1102.5640212856.

The spelling of 1340329109 in words is "one billion, three hundred forty million, three hundred twenty-nine thousand, one hundred nine".