7686143738 has 16 divisors (see below), whose sum is σ = 14189804160. Its totient is φ = 3040672176.

The previous prime is 7686143719. The next prime is 7686143767. The reversal of 7686143738 is 8373416867.

It is a super-2 number, since 2×7686143738² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7686143738.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21115598 + ... + 21115961.

It is an arithmetic number, because the mean of its divisors is an integer number (886862760).

Almost surely, 2^7686143738 is an apocalyptic number.

7686143738 is a deficient number, since it is larger than the sum of its proper divisors (6503660422).

7686143738 is a wasteful number, since it uses less digits than its factorization.

7686143738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42231581.

The product of its digits is 4064256, while the sum is 53.

The square root of 7686143738 is about 87670.6549422325. The cubic root of 7686143738 is about 1973.4956220454.

The spelling of 7686143738 in words is "seven billion, six hundred eighty-six million, one hundred forty-three thousand, seven hundred thirty-eight".