1663485829 has 2 divisors, whose sum is σ = 1663485830. Its totient is φ = 1663485828.

The previous prime is 1663485797. The next prime is 1663485839. The reversal of 1663485829 is 9285843661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129968225 + 533517604 = 33615^2 + 23098^2 .

It is an emirp because it is prime and its reverse (9285843661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1663485829 - 2⁵ = 1663485797 is a prime.

It is a super-3 number, since 3×1663485829³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663485839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831742914 + 831742915.

It is an arithmetic number, because the mean of its divisors is an integer number (831742915).

Almost surely, 2^1663485829 is an apocalyptic number.

It is an amenable number.

1663485829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663485829 is an equidigital number, since it uses as much as digits as its factorization.

1663485829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The square root of 1663485829 is about 40785.8532949845. The cubic root of 1663485829 is about 1184.8763611383.

The spelling of 1663485829 in words is "one billion, six hundred sixty-three million, four hundred eighty-five thousand, eight hundred twenty-nine".