6539009386 has 32 divisors (see below), whose sum is σ = 12146133888. Its totient is φ = 2570978880.

The previous prime is 6539009363. The next prime is 6539009419. The reversal of 6539009386 is 6839009356.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80545 + ... + 139876.

It is an arithmetic number, because the mean of its divisors is an integer number (379566684).

Almost surely, 2^6539009386 is an apocalyptic number.

6539009386 is a deficient number, since it is larger than the sum of its proper divisors (5607124502).

6539009386 is a wasteful number, since it uses less digits than its factorization.

6539009386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220606.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 6539009386 is about 80864.1415338097. The cubic root of 6539009386 is about 1869.9815440427.

The spelling of 6539009386 in words is "six billion, five hundred thirty-nine million, nine thousand, three hundred eighty-six".