2168479903 has 4 divisors (see below), whose sum is σ = 2168578440. Its totient is φ = 2168381368.

The previous prime is 2168479891. The next prime is 2168479913. The reversal of 2168479903 is 3099748612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168479903 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168479913) 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, 501 + ... + 65857.

It is an arithmetic number, because the mean of its divisors is an integer number (542144610).

Almost surely, 2^2168479903 is an apocalyptic number.

2168479903 is a deficient number, since it is larger than the sum of its proper divisors (98537).

2168479903 is an equidigital number, since it uses as much as digits as its factorization.

2168479903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98536.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 2168479903 is about 46566.9400218653. The cubic root of 2168479903 is about 1294.3502159981.

The spelling of 2168479903 in words is "two billion, one hundred sixty-eight million, four hundred seventy-nine thousand, nine hundred three".