1340780597 has 12 divisors (see below), whose sum is σ = 1498690944. Its totient is φ = 1197714960.

The previous prime is 1340780579. The next prime is 1340780627. The reversal of 1340780597 is 7950870431.

It is not a de Polignac number, because 1340780597 - 2⁶ = 1340780533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340780527) 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 11 ways as a sum of consecutive naturals, for example, 122723 + ... + 133200.

It is an arithmetic number, because the mean of its divisors is an integer number (124890912).

Almost surely, 2^1340780597 is an apocalyptic number.

It is an amenable number.

1340780597 is a deficient number, since it is larger than the sum of its proper divisors (157910347).

1340780597 is a wasteful number, since it uses less digits than its factorization.

1340780597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255980 (or 255967 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 1340780597 is about 36616.6710256408. The cubic root of 1340780597 is about 1102.6878064411.

The spelling of 1340780597 in words is "one billion, three hundred forty million, seven hundred eighty thousand, five hundred ninety-seven".