1340744547 has 16 divisors (see below), whose sum is σ = 1800368640. Its totient is φ = 887490912.

The previous prime is 1340744539. The next prime is 1340744549. The reversal of 1340744547 is 7454470431.

It is not a de Polignac number, because 1340744547 - 2³ = 1340744539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340744549) 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 15 ways as a sum of consecutive naturals, for example, 456598 + ... + 459524.

It is an arithmetic number, because the mean of its divisors is an integer number (112523040).

Almost surely, 2^1340744547 is an apocalyptic number.

1340744547 is a deficient number, since it is larger than the sum of its proper divisors (459624093).

1340744547 is a wasteful number, since it uses less digits than its factorization.

1340744547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962.

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 1340744547 is about 36616.1787602147. The cubic root of 1340744547 is about 1102.6779235783.

The spelling of 1340744547 in words is "one billion, three hundred forty million, seven hundred forty-four thousand, five hundred forty-seven".