6383919861 has 24 divisors (see below), whose sum is σ = 10197323136. Its totient is φ = 3816037440.

The previous prime is 6383919823. The next prime is 6383919863. The reversal of 6383919861 is 1689193836.

It is not a de Polignac number, because 6383919861 - 2⁶ = 6383919797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6383919798 and 6383919807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6383919863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434445 + ... + 448898.

It is an arithmetic number, because the mean of its divisors is an integer number (424888464).

Almost surely, 2^6383919861 is an apocalyptic number.

It is an amenable number.

6383919861 is a deficient number, since it is larger than the sum of its proper divisors (3813403275).

6383919861 is a wasteful number, since it uses less digits than its factorization.

6383919861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883433 (or 883430 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 6383919861 is about 79899.4359241666. The cubic root of 6383919861 is about 1855.0792836455.

The spelling of 6383919861 in words is "six billion, three hundred eighty-three million, nine hundred nineteen thousand, eight hundred sixty-one".