8161229347 has 2 divisors, whose sum is σ = 8161229348. Its totient is φ = 8161229346.

The previous prime is 8161229309. The next prime is 8161229369. The reversal of 8161229347 is 7439221618.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8161229347 is a prime.

It is not a weakly prime, because it can be changed into another prime (8161229147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4080614673 + 4080614674.

It is an arithmetic number, because the mean of its divisors is an integer number (4080614674).

Almost surely, 2^8161229347 is an apocalyptic number.

8161229347 is a deficient number, since it is larger than the sum of its proper divisors (1).

8161229347 is an equidigital number, since it uses as much as digits as its factorization.

8161229347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 8161229347 is about 90339.5226188405. The cubic root of 8161229347 is about 2013.3465160539.

The spelling of 8161229347 in words is "eight billion, one hundred sixty-one million, two hundred twenty-nine thousand, three hundred forty-seven".