1663470047 has 4 divisors (see below), whose sum is σ = 1664204160. Its totient is φ = 1662735936.

The previous prime is 1663470041. The next prime is 1663470049. The reversal of 1663470047 is 7400743661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1663470047 - 2²² = 1659275743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663470041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363647 + ... + 368192.

It is an arithmetic number, because the mean of its divisors is an integer number (416051040).

Almost surely, 2^1663470047 is an apocalyptic number.

1663470047 is a deficient number, since it is larger than the sum of its proper divisors (734113).

1663470047 is an equidigital number, since it uses as much as digits as its factorization.

1663470047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734112.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 1663470047 is about 40785.6598205791. The cubic root of 1663470047 is about 1184.8726140313.

The spelling of 1663470047 in words is "one billion, six hundred sixty-three million, four hundred seventy thousand, forty-seven".