7783782313 has 4 divisors (see below), whose sum is σ = 7788808900. Its totient is φ = 7778755728.

The previous prime is 7783782289. The next prime is 7783782361. The reversal of 7783782313 is 3132873877.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2823115689 + 4960666624 = 53133^2 + 70432^2 .

It is a cyclic number.

It is not a de Polignac number, because 7783782313 - 2¹³ = 7783774121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7783782113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2510970 + ... + 2514067.

It is an arithmetic number, because the mean of its divisors is an integer number (1947202225).

Almost surely, 2^7783782313 is an apocalyptic number.

It is an amenable number.

7783782313 is a deficient number, since it is larger than the sum of its proper divisors (5026587).

7783782313 is a wasteful number, since it uses less digits than its factorization.

7783782313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026586.

The product of its digits is 1185408, while the sum is 49.

The square root of 7783782313 is about 88225.7463159139. The cubic root of 7783782313 is about 1981.8170505616.

The spelling of 7783782313 in words is "seven billion, seven hundred eighty-three million, seven hundred eighty-two thousand, three hundred thirteen".