7820959538 has 16 divisors (see below), whose sum is σ = 13537530240. Its totient is φ = 3319297056.

The previous prime is 7820959519. The next prime is 7820959541. The reversal of 7820959538 is 8359590287.

It is a super-2 number, since 2×7820959538² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2710403 + ... + 2713286.

It is an arithmetic number, because the mean of its divisors is an integer number (846095640).

Almost surely, 2^7820959538 is an apocalyptic number.

7820959538 is a deficient number, since it is larger than the sum of its proper divisors (5716570702).

7820959538 is a wasteful number, since it uses less digits than its factorization.

7820959538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423801.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The square root of 7820959538 is about 88436.1890743829. The cubic root of 7820959538 is about 1984.9672528527.

The spelling of 7820959538 in words is "seven billion, eight hundred twenty million, nine hundred fifty-nine thousand, five hundred thirty-eight".