7081097749 has 6 divisors (see below), whose sum is σ = 7783355510. Its totient is φ = 6437361480.

The previous prime is 7081097743. The next prime is 7081097753. The reversal of 7081097749 is 9477901807.

It can be written as a sum of positive squares in only one way, i.e., 6921075249 + 160022500 = 83193^2 + 12650^2 .

It is not a de Polignac number, because 7081097749 - 2¹⁷ = 7080966677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7081097696 and 7081097705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7081097743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29260614 + ... + 29260855.

Almost surely, 2^7081097749 is an apocalyptic number.

It is an amenable number.

7081097749 is a deficient number, since it is larger than the sum of its proper divisors (702257761).

7081097749 is a wasteful number, since it uses less digits than its factorization.

7081097749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58521491 (or 58521480 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 7081097749 is about 84149.2587549053. The cubic root of 7081097749 is about 1920.2901895188.

The spelling of 7081097749 in words is "seven billion, eighty-one million, ninety-seven thousand, seven hundred forty-nine".