7885073813 has 4 divisors (see below), whose sum is σ = 8156972940. Its totient is φ = 7613174688.

The previous prime is 7885073809. The next prime is 7885073839. The reversal of 7885073813 is 3183705887.

7885073813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4467852964 + 3417220849 = 66842^2 + 58457^2 .

It is a cyclic number.

It is not a de Polignac number, because 7885073813 - 2² = 7885073809 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 (7885073213) 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, 135949520 + ... + 135949577.

It is an arithmetic number, because the mean of its divisors is an integer number (2039243235).

Almost surely, 2^7885073813 is an apocalyptic number.

It is an amenable number.

7885073813 is a deficient number, since it is larger than the sum of its proper divisors (271899127).

7885073813 is a wasteful number, since it uses less digits than its factorization.

7885073813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271899126.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 7885073813 is about 88797.9381123233. The cubic root of 7885073813 is about 1990.3765869797.

The spelling of 7885073813 in words is "seven billion, eight hundred eighty-five million, seventy-three thousand, eight hundred thirteen".