1663950467 has 4 divisors (see below), whose sum is σ = 1668142176. Its totient is φ = 1659758760.

The previous prime is 1663950461. The next prime is 1663950469. The reversal of 1663950467 is 7640593661.

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 1663950467 - 2¹² = 1663946371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663950461) 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, 2095259 + ... + 2096052.

It is an arithmetic number, because the mean of its divisors is an integer number (417035544).

Almost surely, 2^1663950467 is an apocalyptic number.

1663950467 is a deficient number, since it is larger than the sum of its proper divisors (4191709).

1663950467 is an equidigital number, since it uses as much as digits as its factorization.

1663950467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4191708.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 1663950467 is about 40791.5489654414. The cubic root of 1663950467 is about 1184.9866691279.

The spelling of 1663950467 in words is "one billion, six hundred sixty-three million, nine hundred fifty thousand, four hundred sixty-seven".