1663381147 has 2 divisors, whose sum is σ = 1663381148. Its totient is φ = 1663381146.

The previous prime is 1663381127. The next prime is 1663381151. The reversal of 1663381147 is 7411833661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1663381147 - 2¹¹ = 1663379099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1663381127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831690573 + 831690574.

It is an arithmetic number, because the mean of its divisors is an integer number (831690574).

Almost surely, 2^1663381147 is an apocalyptic number.

1663381147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663381147 is an equidigital number, since it uses as much as digits as its factorization.

1663381147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 1663381147 is about 40784.5699621806. The cubic root of 1663381147 is about 1184.8515061366.

The spelling of 1663381147 in words is "one billion, six hundred sixty-three million, three hundred eighty-one thousand, one hundred forty-seven".