1670681339 has 2 divisors, whose sum is σ = 1670681340. Its totient is φ = 1670681338.

The previous prime is 1670681323. The next prime is 1670681399. The reversal of 1670681339 is 9331860761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1670681339 - 2⁴ = 1670681323 is a prime.

It is a super-2 number, since 2×1670681339² = 5582352272965665842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1670681339.

It is not a weakly prime, because it can be changed into another prime (1670681399) 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 as a sum of consecutive naturals, namely, 835340669 + 835340670.

It is an arithmetic number, because the mean of its divisors is an integer number (835340670).

Almost surely, 2^1670681339 is an apocalyptic number.

1670681339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670681339 is an equidigital number, since it uses as much as digits as its factorization.

1670681339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1670681339 is about 40873.9689655898. The cubic root of 1670681339 is about 1186.5823222133.

The spelling of 1670681339 in words is "one billion, six hundred seventy million, six hundred eighty-one thousand, three hundred thirty-nine".