6386964973 has 2 divisors, whose sum is σ = 6386964974. Its totient is φ = 6386964972.

The previous prime is 6386964917. The next prime is 6386965037. The reversal of 6386964973 is 3794696836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5916378724 + 470586249 = 76918^2 + 21693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6386964973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6386964473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3193482486 + 3193482487.

It is an arithmetic number, because the mean of its divisors is an integer number (3193482487).

Almost surely, 2^6386964973 is an apocalyptic number.

It is an amenable number.

6386964973 is a deficient number, since it is larger than the sum of its proper divisors (1).

6386964973 is an equidigital number, since it uses as much as digits as its factorization.

6386964973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 61.

The square root of 6386964973 is about 79918.4895565476. The cubic root of 6386964973 is about 1855.3741926447.

The spelling of 6386964973 in words is "six billion, three hundred eighty-six million, nine hundred sixty-four thousand, nine hundred seventy-three".