6196643977 has 2 divisors, whose sum is σ = 6196643978. Its totient is φ = 6196643976.

The previous prime is 6196643951. The next prime is 6196643987. The reversal of 6196643977 is 7793466916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5389174921 + 807469056 = 73411^2 + 28416^2 .

It is a cyclic number.

It is not a de Polignac number, because 6196643977 - 2¹⁵ = 6196611209 is a prime.

It is not a weakly prime, because it can be changed into another prime (6196643987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3098321988 + 3098321989.

It is an arithmetic number, because the mean of its divisors is an integer number (3098321989).

Almost surely, 2^6196643977 is an apocalyptic number.

It is an amenable number.

6196643977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6196643977 is an equidigital number, since it uses as much as digits as its factorization.

6196643977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 58.

The square root of 6196643977 is about 78718.7650881288. The cubic root of 6196643977 is about 1836.7590214717.

The spelling of 6196643977 in words is "six billion, one hundred ninety-six million, six hundred forty-three thousand, nine hundred seventy-seven".