6506449438 has 8 divisors (see below), whose sum is σ = 10184007888. Its totient is φ = 3111780144.

The previous prime is 6506449429. The next prime is 6506449511. The reversal of 6506449438 is 8349446056.

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

It is a junction number, because it is equal to n+sod(n) for n = 6506449391 and 6506449400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70722231 + ... + 70722322.

It is an arithmetic number, because the mean of its divisors is an integer number (1273000986).

Almost surely, 2^6506449438 is an apocalyptic number.

6506449438 is a deficient number, since it is larger than the sum of its proper divisors (3677558450).

6506449438 is a wasteful number, since it uses less digits than its factorization.

6506449438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141444578.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The square root of 6506449438 is about 80662.5652827878. The cubic root of 6506449438 is about 1866.8726205085.

The spelling of 6506449438 in words is "six billion, five hundred six million, four hundred forty-nine thousand, four hundred thirty-eight".