7843265138 has 8 divisors (see below), whose sum is σ = 11869012188. Its totient is φ = 3886927744.

The previous prime is 7843265099. The next prime is 7843265141. The reversal of 7843265138 is 8315623487.

It can be written as a sum of positive squares in 2 ways, for example, as 7838800369 + 4464769 = 88537^2 + 2113^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7843265092 and 7843265101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17352131 + ... + 17352582.

Almost surely, 2^7843265138 is an apocalyptic number.

7843265138 is a deficient number, since it is larger than the sum of its proper divisors (4025747050).

7843265138 is a wasteful number, since it uses less digits than its factorization.

7843265138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34704828.

The product of its digits is 967680, while the sum is 47.

The square root of 7843265138 is about 88562.2105528086. The cubic root of 7843265138 is about 1986.8525228069.

The spelling of 7843265138 in words is "seven billion, eight hundred forty-three million, two hundred sixty-five thousand, one hundred thirty-eight".