6857191340 has 24 divisors (see below), whose sum is σ = 14402295600. Its totient is φ = 2742458688.

The previous prime is 6857191339. The next prime is 6857191387. The reversal of 6857191340 is 431917586.

It is a junction number, because it is equal to n+sod(n) for n = 6857191291 and 6857191300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131714 + ... + 176246.

It is an arithmetic number, because the mean of its divisors is an integer number (600095650).

Almost surely, 2^6857191340 is an apocalyptic number.

It is an amenable number.

6857191340 is an abundant number, since it is smaller than the sum of its proper divisors (7545104260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6857191340 is a wasteful number, since it uses less digits than its factorization.

6857191340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52241 (or 52239 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 6857191340 is about 82808.1598636270. The cubic root of 6857191340 is about 1899.8329807018.

The spelling of 6857191340 in words is "six billion, eight hundred fifty-seven million, one hundred ninety-one thousand, three hundred forty".