2013846661 has 4 divisors (see below), whose sum is σ = 2017111212. Its totient is φ = 2010582112.

The previous prime is 2013846641. The next prime is 2013846761. The reversal of 2013846661 is 1666483102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 558424161 + 1455422500 = 23631^2 + 38150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013846661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2013846661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013846641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631350 + ... + 1632583.

It is an arithmetic number, because the mean of its divisors is an integer number (504277803).

Almost surely, 2^2013846661 is an apocalyptic number.

It is an amenable number.

2013846661 is a deficient number, since it is larger than the sum of its proper divisors (3264551).

2013846661 is an equidigital number, since it uses as much as digits as its factorization.

2013846661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264550.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 2013846661 is about 44875.9028989947. The cubic root of 2013846661 is about 1262.8219820660.

The spelling of 2013846661 in words is "two billion, thirteen million, eight hundred forty-six thousand, six hundred sixty-one".