7840341668 has 12 divisors (see below), whose sum is σ = 13724454492. Its totient is φ = 3919068960.

The previous prime is 7840341653. The next prime is 7840341731. The reversal of 7840341668 is 8661430487.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7052304484 + 788037184 = 83978^2 + 28072^2 .

It is a super-2 number, since 2×7840341668² (a number of 21 digits) contains 22 as substring.

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, 259355 + ... + 288002.

It is an arithmetic number, because the mean of its divisors is an integer number (1143704541).

Almost surely, 2^7840341668 is an apocalyptic number.

It is an amenable number.

7840341668 is a deficient number, since it is larger than the sum of its proper divisors (5884112824).

7840341668 is a wasteful number, since it uses less digits than its factorization.

7840341668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550942 (or 550940 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 7840341668 is about 88545.7038370581. The cubic root of 7840341668 is about 1986.6056347455.

The spelling of 7840341668 in words is "seven billion, eight hundred forty million, three hundred forty-one thousand, six hundred sixty-eight".