1340216783 has 2 divisors, whose sum is σ = 1340216784. Its totient is φ = 1340216782.

The previous prime is 1340216771. The next prime is 1340216821. The reversal of 1340216783 is 3876120431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340216783 - 2⁴ = 1340216767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340216723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670108391 + 670108392.

It is an arithmetic number, because the mean of its divisors is an integer number (670108392).

Almost surely, 2^1340216783 is an apocalyptic number.

1340216783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340216783 is an equidigital number, since it uses as much as digits as its factorization.

1340216783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1340216783 is about 36608.9713458327. The cubic root of 1340216783 is about 1102.5332203762.

The spelling of 1340216783 in words is "one billion, three hundred forty million, two hundred sixteen thousand, seven hundred eighty-three".