2013786961 has 4 divisors (see below), whose sum is σ = 2046799924. Its totient is φ = 1980774000.

The previous prime is 2013786937. The next prime is 2013786989. The reversal of 2013786961 is 1696873102.

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 736796736 + 1276990225 = 27144^2 + 35735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013786961 - 2¹³ = 2013778769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013786911) 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, 16506390 + ... + 16506511.

It is an arithmetic number, because the mean of its divisors is an integer number (511699981).

Almost surely, 2^2013786961 is an apocalyptic number.

It is an amenable number.

2013786961 is a deficient number, since it is larger than the sum of its proper divisors (33012963).

2013786961 is an equidigital number, since it uses as much as digits as its factorization.

2013786961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33012962.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 2013786961 is about 44875.2377263898. The cubic root of 2013786961 is about 1262.8095032580.

The spelling of 2013786961 in words is "two billion, thirteen million, seven hundred eighty-six thousand, nine hundred sixty-one".