1340780347 has 8 divisors (see below), whose sum is σ = 1352581200. Its totient is φ = 1329027744.

The previous prime is 1340780323. The next prime is 1340780351. The reversal of 1340780347 is 7430870431.

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

It is not a de Polignac number, because 1340780347 - 2²⁷ = 1206562619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340780047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44929 + ... + 68557.

It is an arithmetic number, because the mean of its divisors is an integer number (169072650).

Almost surely, 2^1340780347 is an apocalyptic number.

1340780347 is a deficient number, since it is larger than the sum of its proper divisors (11800853).

1340780347 is a wasteful number, since it uses less digits than its factorization.

1340780347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24125.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 1340780347 is about 36616.6676118950. The cubic root of 1340780347 is about 1102.6877379059.

The spelling of 1340780347 in words is "one billion, three hundred forty million, seven hundred eighty thousand, three hundred forty-seven".