6386042881 has 4 divisors (see below), whose sum is σ = 6394827712. Its totient is φ = 6377258052.

The previous prime is 6386042879. The next prime is 6386042893. The reversal of 6386042881 is 1882406836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6386042881 - 2¹ = 6386042879 is a prime.

It is a super-2 number, since 2×6386042881² = 81563087355941560322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6386042081) 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 3 ways as a sum of consecutive naturals, for example, 4391325 + ... + 4392778.

It is an arithmetic number, because the mean of its divisors is an integer number (1598706928).

Almost surely, 2^6386042881 is an apocalyptic number.

It is an amenable number.

6386042881 is a deficient number, since it is larger than the sum of its proper divisors (8784831).

6386042881 is an equidigital number, since it uses as much as digits as its factorization.

6386042881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8784830.

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 6386042881 is about 79912.7203954414. The cubic root of 6386042881 is about 1855.2849009887.

The spelling of 6386042881 in words is "six billion, three hundred eighty-six million, forty-two thousand, eight hundred eighty-one".