6191726961 has 64 divisors (see below), whose sum is σ = 10230105600. Its totient is φ = 3250630656.

The previous prime is 6191726951. The next prime is 6191726963. The reversal of 6191726961 is 1696271916.

It is a happy number.

It is not a de Polignac number, because 6191726961 - 2⁵ = 6191726929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6191726961.

It is not an unprimeable number, because it can be changed into a prime (6191726963) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4332195 + ... + 4333623.

It is an arithmetic number, because the mean of its divisors is an integer number (159845400).

Almost surely, 2^6191726961 is an apocalyptic number.

It is an amenable number.

6191726961 is a deficient number, since it is larger than the sum of its proper divisors (4038378639).

6191726961 is a wasteful number, since it uses less digits than its factorization.

With its successor (6191726962) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1738).

6191726961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738.

The product of its digits is 244944, while the sum is 48.

The square root of 6191726961 is about 78687.5273534504. The cubic root of 6191726961 is about 1836.2730722293.

The spelling of 6191726961 in words is "six billion, one hundred ninety-one million, seven hundred twenty-six thousand, nine hundred sixty-one".