6513534389 has 2 divisors, whose sum is σ = 6513534390. Its totient is φ = 6513534388.

The previous prime is 6513534329. The next prime is 6513534397. The reversal of 6513534389 is 9834353156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4867852900 + 1645681489 = 69770^2 + 40567^2 .

It is a cyclic number.

It is not a de Polignac number, because 6513534389 - 2⁸ = 6513534133 is a prime.

It is a super-2 number, since 2×6513534389² = 84852260473371206642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6513534329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3256767194 + 3256767195.

It is an arithmetic number, because the mean of its divisors is an integer number (3256767195).

Almost surely, 2^6513534389 is an apocalyptic number.

It is an amenable number.

6513534389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6513534389 is an equidigital number, since it uses as much as digits as its factorization.

6513534389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 47.

The square root of 6513534389 is about 80706.4705522426. The cubic root of 6513534389 is about 1867.5499947130.

The spelling of 6513534389 in words is "six billion, five hundred thirteen million, five hundred thirty-four thousand, three hundred eighty-nine".