1663381127 has 2 divisors, whose sum is σ = 1663381128. Its totient is φ = 1663381126.

The previous prime is 1663381079. The next prime is 1663381147. The reversal of 1663381127 is 7211833661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1663381127 - 2⁶ = 1663381063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663381147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831690563 + 831690564.

It is an arithmetic number, because the mean of its divisors is an integer number (831690564).

Almost surely, 2^1663381127 is an apocalyptic number.

1663381127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663381127 is an equidigital number, since it uses as much as digits as its factorization.

1663381127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 1663381127 is about 40784.5697169898. The cubic root of 1663381127 is about 1184.8515013878.

The spelling of 1663381127 in words is "one billion, six hundred sixty-three million, three hundred eighty-one thousand, one hundred twenty-seven".