2013805697 has 4 divisors (see below), whose sum is σ = 2068232916. Its totient is φ = 1959378480.

The previous prime is 2013805691. The next prime is 2013805711. The reversal of 2013805697 is 7965083102.

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 1411054096 + 602751601 = 37564^2 + 24551^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013805697 - 2⁴ = 2013805681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013805691) 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, 27213554 + ... + 27213627.

It is an arithmetic number, because the mean of its divisors is an integer number (517058229).

Almost surely, 2^2013805697 is an apocalyptic number.

It is an amenable number.

2013805697 is a deficient number, since it is larger than the sum of its proper divisors (54427219).

2013805697 is an equidigital number, since it uses as much as digits as its factorization.

2013805697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54427218.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 2013805697 is about 44875.4464824585. The cubic root of 2013805697 is about 1262.8134195818.

Adding to 2013805697 its reverse (7965083102), we get a palindrome (9978888799).

The spelling of 2013805697 in words is "two billion, thirteen million, eight hundred five thousand, six hundred ninety-seven".