7821364718 has 8 divisors (see below), whose sum is σ = 11751569760. Its totient is φ = 3904174800.

The previous prime is 7821364717. The next prime is 7821364781. The reversal of 7821364718 is 8174631287.

It is a happy number.

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

It is a super-2 number, since 2×7821364718² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7821364711) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3252278 + ... + 3254681.

It is an arithmetic number, because the mean of its divisors is an integer number (1468946220).

Almost surely, 2^7821364718 is an apocalyptic number.

7821364718 is a deficient number, since it is larger than the sum of its proper divisors (3930205042).

7821364718 is a wasteful number, since it uses less digits than its factorization.

7821364718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507562.

The product of its digits is 451584, while the sum is 47.

The square root of 7821364718 is about 88438.4798489888. The cubic root of 7821364718 is about 1985.0015306221.

The spelling of 7821364718 in words is "seven billion, eight hundred twenty-one million, three hundred sixty-four thousand, seven hundred eighteen".