6499156938 has 8 divisors (see below), whose sum is σ = 12998313888. Its totient is φ = 2166385644.

The previous prime is 6499156921. The next prime is 6499156949. The reversal of 6499156938 is 8396519946.

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

6499156938 is an admirable 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, 541596406 + ... + 541596417.

It is an arithmetic number, because the mean of its divisors is an integer number (1624789236).

Almost surely, 2^6499156938 is an apocalyptic number.

6499156938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6499156938 is a wasteful number, since it uses less digits than its factorization.

6499156938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083192828.

The product of its digits is 12597120, while the sum is 60.

The square root of 6499156938 is about 80617.3488648690. The cubic root of 6499156938 is about 1866.1748893220.

The spelling of 6499156938 in words is "six billion, four hundred ninety-nine million, one hundred fifty-six thousand, nine hundred thirty-eight".