6540542146 has 8 divisors (see below), whose sum is σ = 9867523644. Its totient is φ = 3251367600.

The previous prime is 6540542123. The next prime is 6540542153. The reversal of 6540542146 is 6412450456.

It can be written as a sum of positive squares in 2 ways, for example, as 5574264921 + 966277225 = 74661^2 + 31085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 9451305 + ... + 9451996.

Almost surely, 2^6540542146 is an apocalyptic number.

6540542146 is a deficient number, since it is larger than the sum of its proper divisors (3326981498).

6540542146 is a wasteful number, since it uses less digits than its factorization.

6540542146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18903476.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 6540542146 is about 80873.6183560498. The cubic root of 6540542146 is about 1870.1276420636.

The spelling of 6540542146 in words is "six billion, five hundred forty million, five hundred forty-two thousand, one hundred forty-six".