80811983 has 8 divisors (see below), whose sum is σ = 93735552. Its totient is φ = 68233176.

The previous prime is 80811979. The next prime is 80811989. The reversal of 80811983 is 38911808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80811983 - 2² = 80811979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80811989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85685 + ... + 86622.

It is an arithmetic number, because the mean of its divisors is an integer number (11716944).

Almost surely, 2^80811983 is an apocalyptic number.

80811983 is a deficient number, since it is larger than the sum of its proper divisors (12923569).

80811983 is a wasteful number, since it uses less digits than its factorization.

80811983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172381.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 80811983 is about 8989.5485426132. The cubic root of 80811983 is about 432.3398371175.

The spelling of 80811983 in words is "eighty million, eight hundred eleven thousand, nine hundred eighty-three".