2013403663 has 4 divisors (see below), whose sum is σ = 2060227048. Its totient is φ = 1966580280.

The previous prime is 2013403643. The next prime is 2013403673. The reversal of 2013403663 is 3663043102.

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 2013403663 - 2²¹ = 2011306511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013403633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23411628 + ... + 23411713.

It is an arithmetic number, because the mean of its divisors is an integer number (515056762).

Almost surely, 2^2013403663 is an apocalyptic number.

2013403663 is a deficient number, since it is larger than the sum of its proper divisors (46823385).

2013403663 is an equidigital number, since it uses as much as digits as its factorization.

2013403663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46823384.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 2013403663 is about 44870.9668159713. The cubic root of 2013403663 is about 1262.7293784187.

Adding to 2013403663 its reverse (3663043102), we get a palindrome (5676446765).

The spelling of 2013403663 in words is "two billion, thirteen million, four hundred three thousand, six hundred sixty-three".