7818198484 has 12 divisors (see below), whose sum is σ = 13686523200. Its totient is φ = 3907763288.

The previous prime is 7818198439. The next prime is 7818198517. The reversal of 7818198484 is 4848918187.

It is a super-2 number, since 2×7818198484² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 320764 + ... + 344275.

It is an arithmetic number, because the mean of its divisors is an integer number (1140543600).

Almost surely, 2^7818198484 is an apocalyptic number.

It is an amenable number.

7818198484 is a deficient number, since it is larger than the sum of its proper divisors (5868324716).

7818198484 is a wasteful number, since it uses less digits than its factorization.

7818198484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667982 (or 667980 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 58.

The square root of 7818198484 is about 88420.5772657021. The cubic root of 7818198484 is about 1984.7336392823.

The spelling of 7818198484 in words is "seven billion, eight hundred eighteen million, one hundred ninety-eight thousand, four hundred eighty-four".