3689497613 has 2 divisors, whose sum is σ = 3689497614. Its totient is φ = 3689497612.

The previous prime is 3689497601. The next prime is 3689497619. The reversal of 3689497613 is 3167949863.

3689497613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3609966889 + 79530724 = 60083^2 + 8918^2 .

It is a cyclic number.

It is not a de Polignac number, because 3689497613 - 2¹⁸ = 3689235469 is a prime.

It is a super-2 number, since 2×3689497613² = 27224785272665395538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3689497619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844748806 + 1844748807.

It is an arithmetic number, because the mean of its divisors is an integer number (1844748807).

Almost surely, 2^3689497613 is an apocalyptic number.

It is an amenable number.

3689497613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3689497613 is an equidigital number, since it uses as much as digits as its factorization.

3689497613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The square root of 3689497613 is about 60741.2348656166. The cubic root of 3689497613 is about 1545.2155783291.

The spelling of 3689497613 in words is "three billion, six hundred eighty-nine million, four hundred ninety-seven thousand, six hundred thirteen".