6490434851 has 4 divisors (see below), whose sum is σ = 6490953600. Its totient is φ = 6489916104.

The previous prime is 6490434833. The next prime is 6490434911. The reversal of 6490434851 is 1584340946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6490434851 - 2³⁰ = 5416693027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6490434151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240131 + ... + 265788.

It is an arithmetic number, because the mean of its divisors is an integer number (1622738400).

Almost surely, 2^6490434851 is an apocalyptic number.

6490434851 is a deficient number, since it is larger than the sum of its proper divisors (518749).

6490434851 is a wasteful number, since it uses less digits than its factorization.

6490434851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518748.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 6490434851 is about 80563.2351075849. The cubic root of 6490434851 is about 1865.3396924531.

The spelling of 6490434851 in words is "six billion, four hundred ninety million, four hundred thirty-four thousand, eight hundred fifty-one".