7821843274 has 16 divisors (see below), whose sum is σ = 13592559168. Its totient is φ = 3306297312.

The previous prime is 7821843241. The next prime is 7821843277. The reversal of 7821843274 is 4723481287.

It is a super-2 number, since 2×7821843274² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7821843277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3825712 + ... + 3827755.

It is an arithmetic number, because the mean of its divisors is an integer number (849534948).

Almost surely, 2^7821843274 is an apocalyptic number.

7821843274 is a deficient number, since it is larger than the sum of its proper divisors (5770715894).

7821843274 is a wasteful number, since it uses less digits than its factorization.

7821843274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7653549.

The product of its digits is 602112, while the sum is 46.

The square root of 7821843274 is about 88441.1853945886. The cubic root of 7821843274 is about 1985.0420143933.

The spelling of 7821843274 in words is "seven billion, eight hundred twenty-one million, eight hundred forty-three thousand, two hundred seventy-four".