1663393105 has 8 divisors (see below), whose sum is σ = 2177532864. Its totient is φ = 1209740400.

The previous prime is 1663393093. The next prime is 1663393157. The reversal of 1663393105 is 5013933661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1663393105 - 2⁹ = 1663392593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15121701 + ... + 15121810.

It is an arithmetic number, because the mean of its divisors is an integer number (272191608).

Almost surely, 2^1663393105 is an apocalyptic number.

It is an amenable number.

1663393105 is a deficient number, since it is larger than the sum of its proper divisors (514139759).

1663393105 is a wasteful number, since it uses less digits than its factorization.

1663393105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30243527.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 1663393105 is about 40784.7165614768. The cubic root of 1663393105 is about 1184.8543454178.

The spelling of 1663393105 in words is "one billion, six hundred sixty-three million, three hundred ninety-three thousand, one hundred five".