1663109203 has 4 divisors (see below), whose sum is σ = 1900696240. Its totient is φ = 1425522168.

The previous prime is 1663109179. The next prime is 1663109221. The reversal of 1663109203 is 3029013661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3029013661 = 10009 ⋅302629.

It is a de Polignac number, because none of the positive numbers 2^k-1663109203 is a prime.

It is a super-2 number, since 2×1663109203² = 5531864442206590418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663109293) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 118793508 + ... + 118793521.

It is an arithmetic number, because the mean of its divisors is an integer number (475174060).

Almost surely, 2^1663109203 is an apocalyptic number.

1663109203 is a deficient number, since it is larger than the sum of its proper divisors (237587037).

1663109203 is an equidigital number, since it uses as much as digits as its factorization.

1663109203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237587036.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1663109203 is about 40781.2359180052. The cubic root of 1663109203 is about 1184.7869326784.

The spelling of 1663109203 in words is "one billion, six hundred sixty-three million, one hundred nine thousand, two hundred three".