1340803679 has 2 divisors, whose sum is σ = 1340803680. Its totient is φ = 1340803678.

The previous prime is 1340803657. The next prime is 1340803687. The reversal of 1340803679 is 9763080431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340803679 - 2²⁰ = 1339755103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340802679) by changing a digit.

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 as a sum of consecutive naturals, namely, 670401839 + 670401840.

It is an arithmetic number, because the mean of its divisors is an integer number (670401840).

Almost surely, 2^1340803679 is an apocalyptic number.

1340803679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340803679 is an equidigital number, since it uses as much as digits as its factorization.

1340803679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1340803679 is about 36616.9862085890. The cubic root of 1340803679 is about 1102.6941341216.

The spelling of 1340803679 in words is "one billion, three hundred forty million, eight hundred three thousand, six hundred seventy-nine".