7810494129 has 27 divisors (see below), whose sum is σ = 11444586699. Its totient is φ = 5132936160.

The previous prime is 7810494079. The next prime is 7810494149. The reversal of 7810494129 is 9214940187.

It is a happy number.

The square root of 7810494129 is 88377.

It is a perfect power (a square), and thus also a powerful number.

7810494129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1499780529 + 6310713600 = 38727^2 + 79440^2 .

It is not a de Polignac number, because 7810494129 - 2⁷ = 7810494001 is a prime.

It is a super-2 number, since 2×7810494129² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7810494149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 23596494 + ... + 23596824.

Almost surely, 2^7810494129 is an apocalyptic number.

7810494129 is the 88377-th square number.

7810494129 is the 44189-th centered octagonal number.

It is an amenable number.

7810494129 is a deficient number, since it is larger than the sum of its proper divisors (3634092570).

7810494129 is an frugal number, since it uses more digits than its factorization.

7810494129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The cubic root of 7810494129 is about 1984.0814805985.

The spelling of 7810494129 in words is "seven billion, eight hundred ten million, four hundred ninety-four thousand, one hundred twenty-nine".