4271821613 has 2 divisors, whose sum is σ = 4271821614. Its totient is φ = 4271821612.

The previous prime is 4271821583. The next prime is 4271821633. The reversal of 4271821613 is 3161281724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2613458884 + 1658362729 = 51122^2 + 40723^2 .

It is a cyclic number.

It is not a de Polignac number, because 4271821613 - 2⁶ = 4271821549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4271821633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2135910806 + 2135910807.

It is an arithmetic number, because the mean of its divisors is an integer number (2135910807).

Almost surely, 2^4271821613 is an apocalyptic number.

It is an amenable number.

4271821613 is a deficient number, since it is larger than the sum of its proper divisors (1).

4271821613 is an equidigital number, since it uses as much as digits as its factorization.

4271821613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 4271821613 is about 65359.1739008381. The cubic root of 4271821613 is about 1622.5734656190.

The spelling of 4271821613 in words is "four billion, two hundred seventy-one million, eight hundred twenty-one thousand, six hundred thirteen".