6511193916 has 24 divisors (see below), whose sum is σ = 15332172240. Its totient is φ = 2150485632.

The previous prime is 6511193911. The next prime is 6511193939. The reversal of 6511193916 is 6193911156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511193911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2487681 + ... + 2490296.

It is an arithmetic number, because the mean of its divisors is an integer number (638840510).

Almost surely, 2^6511193916 is an apocalyptic number.

It is an amenable number.

6511193916 is an abundant number, since it is smaller than the sum of its proper divisors (8820978324).

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

6511193916 is a wasteful number, since it uses less digits than its factorization.

6511193916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978093 (or 4978091 counting only the distinct ones).

The product of its digits is 43740, while the sum is 42.

The square root of 6511193916 is about 80691.9693402014. The cubic root of 6511193916 is about 1867.3262823774.

The spelling of 6511193916 in words is "six billion, five hundred eleven million, one hundred ninety-three thousand, nine hundred sixteen".