8166396379 has 2 divisors, whose sum is σ = 8166396380. Its totient is φ = 8166396378.

The previous prime is 8166396349. The next prime is 8166396383. The reversal of 8166396379 is 9736936618.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8166396379 is a prime.

It is not a weakly prime, because it can be changed into another prime (8166396349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4083198189 + 4083198190.

It is an arithmetic number, because the mean of its divisors is an integer number (4083198190).

Almost surely, 2^8166396379 is an apocalyptic number.

8166396379 is a deficient number, since it is larger than the sum of its proper divisors (1).

8166396379 is an equidigital number, since it uses as much as digits as its factorization.

8166396379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 58.

The square root of 8166396379 is about 90368.1159425159. The cubic root of 8166396379 is about 2013.7713226099.

The spelling of 8166396379 in words is "eight billion, one hundred sixty-six million, three hundred ninety-six thousand, three hundred seventy-nine".