1663326466 has 16 divisors (see below), whose sum is σ = 2647598400. Its totient is φ = 782019568.

The previous prime is 1663326437. The next prime is 1663326521. The reversal of 1663326466 is 6646233661.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303721 + ... + 309148.

It is an arithmetic number, because the mean of its divisors is an integer number (165474900).

Almost surely, 2^1663326466 is an apocalyptic number.

1663326466 is a deficient number, since it is larger than the sum of its proper divisors (984271934).

1663326466 is a wasteful number, since it uses less digits than its factorization.

1663326466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612953.

The product of its digits is 559872, while the sum is 43.

The square root of 1663326466 is about 40783.8995928540. The cubic root of 1663326466 is about 1184.8385226270.

The spelling of 1663326466 in words is "one billion, six hundred sixty-three million, three hundred twenty-six thousand, four hundred sixty-six".