6354656491 has 16 divisors (see below), whose sum is σ = 6858781920. Its totient is φ = 5866124800.

The previous prime is 6354656447. The next prime is 6354656527. The reversal of 6354656491 is 1946564536.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6354656491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6354651491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166425 + ... + 201013.

It is an arithmetic number, because the mean of its divisors is an integer number (428673870).

Almost surely, 2^6354656491 is an apocalyptic number.

6354656491 is a deficient number, since it is larger than the sum of its proper divisors (504125429).

6354656491 is a wasteful number, since it uses less digits than its factorization.

6354656491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34814.

The product of its digits is 2332800, while the sum is 49.

The square root of 6354656491 is about 79716.0993212789. The cubic root of 6354656491 is about 1852.2404306176.

The spelling of 6354656491 in words is "six billion, three hundred fifty-four million, six hundred fifty-six thousand, four hundred ninety-one".