8161229368 has 8 divisors (see below), whose sum is σ = 15302305080. Its totient is φ = 4080614680.

The previous prime is 8161229347. The next prime is 8161229369. The reversal of 8161229368 is 8639221618.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161229369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510076828 + ... + 510076843.

It is an arithmetic number, because the mean of its divisors is an integer number (1912788135).

Almost surely, 2^8161229368 is an apocalyptic number.

It is an amenable number.

8161229368 is a deficient number, since it is larger than the sum of its proper divisors (7141075712).

8161229368 is a wasteful number, since it uses less digits than its factorization.

8161229368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020153677 (or 1020153673 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 8161229368 is about 90339.5227350687. The cubic root of 8161229368 is about 2013.3465177808.

The spelling of 8161229368 in words is "eight billion, one hundred sixty-one million, two hundred twenty-nine thousand, three hundred sixty-eight".