6178863871 has 4 divisors (see below), whose sum is σ = 6179250712. Its totient is φ = 6178477032.

The previous prime is 6178863811. The next prime is 6178863881. The reversal of 6178863871 is 1783688716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6178863871 - 2²³ = 6170475263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6178863811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168381 + ... + 201766.

It is an arithmetic number, because the mean of its divisors is an integer number (1544812678).

Almost surely, 2^6178863871 is an apocalyptic number.

6178863871 is a deficient number, since it is larger than the sum of its proper divisors (386841).

6178863871 is a wasteful number, since it uses less digits than its factorization.

6178863871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386840.

The product of its digits is 2709504, while the sum is 55.

The square root of 6178863871 is about 78605.7496052293. The cubic root of 6178863871 is about 1835.0005935647. Note that the first 3 decimals are identical.

The spelling of 6178863871 in words is "six billion, one hundred seventy-eight million, eight hundred sixty-three thousand, eight hundred seventy-one".