7657134389 has 2 divisors, whose sum is σ = 7657134390. Its totient is φ = 7657134388.

The previous prime is 7657134377. The next prime is 7657134427. The reversal of 7657134389 is 9834317567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7427854225 + 229280164 = 86185^2 + 15142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7657134389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7657134389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7657134319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3828567194 + 3828567195.

It is an arithmetic number, because the mean of its divisors is an integer number (3828567195).

Almost surely, 2^7657134389 is an apocalyptic number.

It is an amenable number.

7657134389 is a deficient number, since it is larger than the sum of its proper divisors (1).

7657134389 is an equidigital number, since it uses as much as digits as its factorization.

7657134389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The square root of 7657134389 is about 87505.0535054976. The cubic root of 7657134389 is about 1971.0096767106.

The spelling of 7657134389 in words is "seven billion, six hundred fifty-seven million, one hundred thirty-four thousand, three hundred eighty-nine".