7286981749 has 6 divisors (see below), whose sum is σ = 7320100290. Its totient is φ = 7253874720.

The previous prime is 7286981747. The next prime is 7286981771. The reversal of 7286981749 is 9471896827.

It can be written as a sum of positive squares in 3 ways, for example, as 6878214225 + 408767524 = 82935^2 + 20218^2 .

It is not a de Polignac number, because 7286981749 - 2¹ = 7286981747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7286981747) 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, 1288969 + ... + 1294609.

It is an arithmetic number, because the mean of its divisors is an integer number (1220016715).

Almost surely, 2^7286981749 is an apocalyptic number.

It is an amenable number.

7286981749 is a deficient number, since it is larger than the sum of its proper divisors (33118541).

7286981749 is an frugal number, since it uses more digits than its factorization.

7286981749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11511 (or 5870 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 61.

The square root of 7286981749 is about 85363.8199063280. The cubic root of 7286981749 is about 1938.7235863668.

The spelling of 7286981749 in words is "seven billion, two hundred eighty-six million, nine hundred eighty-one thousand, seven hundred forty-nine".