7810135457 has 2 divisors, whose sum is σ = 7810135458. Its totient is φ = 7810135456.

The previous prime is 7810135453. The next prime is 7810135519. The reversal of 7810135457 is 7545310187.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3982114816 + 3828020641 = 63104^2 + 61871^2 .

It is an emirp because it is prime and its reverse (7545310187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7810135457 - 2² = 7810135453 is a prime.

It is not a weakly prime, because it can be changed into another prime (7810135453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3905067728 + 3905067729.

It is an arithmetic number, because the mean of its divisors is an integer number (3905067729).

Almost surely, 2^7810135457 is an apocalyptic number.

It is an amenable number.

7810135457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7810135457 is an equidigital number, since it uses as much as digits as its factorization.

7810135457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117600, while the sum is 41.

The square root of 7810135457 is about 88374.9707609570. The cubic root of 7810135457 is about 1984.0511092649.

The spelling of 7810135457 in words is "seven billion, eight hundred ten million, one hundred thirty-five thousand, four hundred fifty-seven".