7836826321 has 8 divisors (see below), whose sum is σ = 7880733800. Its totient is φ = 7793003520.

The previous prime is 7836826313. The next prime is 7836826331. The reversal of 7836826321 is 1236286387.

It can be written as a sum of positive squares in 4 ways, for example, as 2925619921 + 4911206400 = 54089^2 + 70080^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7836826321 - 2³ = 7836826313 is a prime.

It is a super-2 number, since 2×7836826321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7836826331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169201 + ... + 210481.

It is an arithmetic number, because the mean of its divisors is an integer number (985091725).

Almost surely, 2^7836826321 is an apocalyptic number.

It is an amenable number.

7836826321 is a deficient number, since it is larger than the sum of its proper divisors (43907479).

7836826321 is a wasteful number, since it uses less digits than its factorization.

7836826321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42339.

The product of its digits is 580608, while the sum is 46.

The square root of 7836826321 is about 88525.8511453011. The cubic root of 7836826321 is about 1986.3086811835.

The spelling of 7836826321 in words is "seven billion, eight hundred thirty-six million, eight hundred twenty-six thousand, three hundred twenty-one".