1669483639 has 2 divisors, whose sum is σ = 1669483640. Its totient is φ = 1669483638.

The previous prime is 1669483591. The next prime is 1669483661. The reversal of 1669483639 is 9363849661.

It is a strong prime.

It is an emirp because it is prime and its reverse (9363849661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1669483639 - 2⁷ = 1669483511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1669483639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1669483679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834741819 + 834741820.

It is an arithmetic number, because the mean of its divisors is an integer number (834741820).

Almost surely, 2^1669483639 is an apocalyptic number.

1669483639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669483639 is an equidigital number, since it uses as much as digits as its factorization.

1669483639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 55.

The square root of 1669483639 is about 40859.3152047364. The cubic root of 1669483639 is about 1186.2987035166.

The spelling of 1669483639 in words is "one billion, six hundred sixty-nine million, four hundred eighty-three thousand, six hundred thirty-nine".