4238997613 has 2 divisors, whose sum is σ = 4238997614. Its totient is φ = 4238997612.

The previous prime is 4238997601. The next prime is 4238997649. The reversal of 4238997613 is 3167998324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3244099849 + 994897764 = 56957^2 + 31542^2 .

It is a cyclic number.

It is not a de Polignac number, because 4238997613 - 2⁹ = 4238997101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4238997673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119498806 + 2119498807.

It is an arithmetic number, because the mean of its divisors is an integer number (2119498807).

Almost surely, 2^4238997613 is an apocalyptic number.

It is an amenable number.

4238997613 is a deficient number, since it is larger than the sum of its proper divisors (1).

4238997613 is an equidigital number, since it uses as much as digits as its factorization.

4238997613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 4238997613 is about 65107.5849114372. The cubic root of 4238997613 is about 1618.4069098554.

The spelling of 4238997613 in words is "four billion, two hundred thirty-eight million, nine hundred ninety-seven thousand, six hundred thirteen".