4644969613 has 2 divisors, whose sum is σ = 4644969614. Its totient is φ = 4644969612.

The previous prime is 4644969611. The next prime is 4644969689. The reversal of 4644969613 is 3169694464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4612854724 + 32114889 = 67918^2 + 5667^2 .

It is a cyclic number.

It is not a de Polignac number, because 4644969613 - 2¹ = 4644969611 is a prime.

Together with 4644969611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4644969611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322484806 + 2322484807.

It is an arithmetic number, because the mean of its divisors is an integer number (2322484807).

Almost surely, 2^4644969613 is an apocalyptic number.

It is an amenable number.

4644969613 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644969613 is an equidigital number, since it uses as much as digits as its factorization.

4644969613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 52.

The square root of 4644969613 is about 68154.0139170101. The cubic root of 4644969613 is about 1668.5054352831.

The spelling of 4644969613 in words is "four billion, six hundred forty-four million, nine hundred sixty-nine thousand, six hundred thirteen".