8161983285 has 16 divisors (see below), whose sum is σ = 13062655104. Its totient is φ = 4351897152.

The previous prime is 8161983191. The next prime is 8161983299. The reversal of 8161983285 is 5823891618.

It is not a de Polignac number, because 8161983285 - 2¹¹ = 8161981237 is a prime.

It is a super-2 number, since 2×8161983285² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12817 + ... + 128406.

It is an arithmetic number, because the mean of its divisors is an integer number (816415944).

Almost surely, 2^8161983285 is an apocalyptic number.

It is an amenable number.

8161983285 is a deficient number, since it is larger than the sum of its proper divisors (4900671819).

8161983285 is a wasteful number, since it uses less digits than its factorization.

8161983285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145084.

The product of its digits is 829440, while the sum is 51.

The square root of 8161983285 is about 90343.6953251305. The cubic root of 8161983285 is about 2013.4085120940.

The spelling of 8161983285 in words is "eight billion, one hundred sixty-one million, nine hundred eighty-three thousand, two hundred eighty-five".