6401928613 has 2 divisors, whose sum is σ = 6401928614. Its totient is φ = 6401928612.

The previous prime is 6401928521. The next prime is 6401928653. The reversal of 6401928613 is 3168291046.

It is an a-pointer prime, because the next prime (6401928653) can be obtained adding 6401928613 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5197977409 + 1203951204 = 72097^2 + 34698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6401928613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6401928653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200964306 + 3200964307.

It is an arithmetic number, because the mean of its divisors is an integer number (3200964307).

Almost surely, 2^6401928613 is an apocalyptic number.

It is an amenable number.

6401928613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6401928613 is an equidigital number, since it uses as much as digits as its factorization.

6401928613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 6401928613 is about 80012.0529232940. The cubic root of 6401928613 is about 1856.8220111434.

The spelling of 6401928613 in words is "six billion, four hundred one million, nine hundred twenty-eight thousand, six hundred thirteen".