6429696818 has 12 divisors (see below), whose sum is σ = 9721133262. Its totient is φ = 3189518640.

The previous prime is 6429696809. The next prime is 6429696827. The reversal of 6429696818 is 8186969246.

It is an interprime number because it is at equal distance from previous prime (6429696809) and next prime (6429696827).

It can be written as a sum of positive squares in only one way, i.e., 3731621569 + 2698075249 = 61087^2 + 51943^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67403 + ... + 131918.

Almost surely, 2^6429696818 is an apocalyptic number.

6429696818 is a deficient number, since it is larger than the sum of its proper divisors (3291436444).

6429696818 is a wasteful number, since it uses less digits than its factorization.

6429696818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199577 (or 199450 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 59.

The square root of 6429696818 is about 80185.3903027229. The cubic root of 6429696818 is about 1859.5027786049.

The spelling of 6429696818 in words is "six billion, four hundred twenty-nine million, six hundred ninety-six thousand, eight hundred eighteen".