6430895681 has 8 divisors (see below), whose sum is σ = 7499587200. Its totient is φ = 5512196004.

The previous prime is 6430895651. The next prime is 6430895761. The reversal of 6430895681 is 1865980346.

It is a de Polignac number, because none of the positive numbers 2^k-6430895681 is a prime.

It is a super-2 number, since 2×6430895681² = 82712838519808907522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6430895651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9374141 + ... + 9374826.

It is an arithmetic number, because the mean of its divisors is an integer number (937448400).

Almost surely, 2^6430895681 is an apocalyptic number.

It is an amenable number.

6430895681 is a deficient number, since it is larger than the sum of its proper divisors (1068691519).

6430895681 is an equidigital number, since it uses as much as digits as its factorization.

6430895681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18748988 (or 18748974 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 6430895681 is about 80192.8655243096. The cubic root of 6430895681 is about 1859.6183439574.

The spelling of 6430895681 in words is "six billion, four hundred thirty million, eight hundred ninety-five thousand, six hundred eighty-one".