6238891513 has 2 divisors, whose sum is σ = 6238891514. Its totient is φ = 6238891512.

The previous prime is 6238891487. The next prime is 6238891537. The reversal of 6238891513 is 3151988326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5450573584 + 788317929 = 73828^2 + 28077^2 .

It is a cyclic number.

It is not a de Polignac number, because 6238891513 - 2¹⁷ = 6238760441 is a prime.

It is not a weakly prime, because it can be changed into another prime (6238891573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3119445756 + 3119445757.

It is an arithmetic number, because the mean of its divisors is an integer number (3119445757).

Almost surely, 2^6238891513 is an apocalyptic number.

It is an amenable number.

6238891513 is a deficient number, since it is larger than the sum of its proper divisors (1).

6238891513 is an equidigital number, since it uses as much as digits as its factorization.

6238891513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 6238891513 is about 78986.6540182580. The cubic root of 6238891513 is about 1840.9237950396.

The spelling of 6238891513 in words is "six billion, two hundred thirty-eight million, eight hundred ninety-one thousand, five hundred thirteen".