6443097381 has 48 divisors (see below), whose sum is σ = 11013603328. Its totient is φ = 3551882400.

The previous prime is 6443097371. The next prime is 6443097389. The reversal of 6443097381 is 1837903446.

It is not a de Polignac number, because 6443097381 - 2⁶ = 6443097317 is a prime.

It is a super-2 number, since 2×6443097381² = 83027007722098118322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443097389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 641460 + ... + 651426.

Almost surely, 2^6443097381 is an apocalyptic number.

It is an amenable number.

6443097381 is a deficient number, since it is larger than the sum of its proper divisors (4570505947).

6443097381 is a wasteful number, since it uses less digits than its factorization.

6443097381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10342 (or 10339 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6443097381 is about 80268.9066887048. The cubic root of 6443097381 is about 1860.7937203862.

The spelling of 6443097381 in words is "six billion, four hundred forty-three million, ninety-seven thousand, three hundred eighty-one".