1663004501 has 2 divisors, whose sum is σ = 1663004502. Its totient is φ = 1663004500.

The previous prime is 1663004477. The next prime is 1663004513. The reversal of 1663004501 is 1054003661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1375668100 + 287336401 = 37090^2 + 16951^2 .

It is an emirp because it is prime and its reverse (1054003661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1663004501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663004591) 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, 831502250 + 831502251.

It is an arithmetic number, because the mean of its divisors is an integer number (831502251).

Almost surely, 2^1663004501 is an apocalyptic number.

It is an amenable number.

1663004501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663004501 is an equidigital number, since it uses as much as digits as its factorization.

1663004501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1663004501 is about 40779.9521946753. The cubic root of 1663004501 is about 1184.7620691748.

The spelling of 1663004501 in words is "one billion, six hundred sixty-three million, four thousand, five hundred one".