6540493436 has 48 divisors (see below), whose sum is σ = 12247272576. Its totient is φ = 3045494784.

The previous prime is 6540493433. The next prime is 6540493451. The reversal of 6540493436 is 6343940456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540493433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3418016 + ... + 3419928.

It is an arithmetic number, because the mean of its divisors is an integer number (255151512).

Almost surely, 2^6540493436 is an apocalyptic number.

It is an amenable number.

6540493436 is a deficient number, since it is larger than the sum of its proper divisors (5706779140).

6540493436 is a wasteful number, since it uses less digits than its factorization.

6540493436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

The square root of 6540493436 is about 80873.3172066041. The cubic root of 6540493436 is about 1870.1229995258.

The spelling of 6540493436 in words is "six billion, five hundred forty million, four hundred ninety-three thousand, four hundred thirty-six".