80819361 has 24 divisors (see below), whose sum is σ = 134282304. Its totient is φ = 45882720.

The previous prime is 80819357. The next prime is 80819363. The reversal of 80819361 is 16391808.

It is not a de Polignac number, because 80819361 - 2² = 80819357 is a prime.

It is a super-2 number, since 2×80819361² = 13063538224896642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80819363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5806 + ... + 13976.

It is an arithmetic number, because the mean of its divisors is an integer number (5595096).

Almost surely, 2^80819361 is an apocalyptic number.

It is an amenable number.

80819361 is a deficient number, since it is larger than the sum of its proper divisors (53462943).

80819361 is a wasteful number, since it uses less digits than its factorization.

80819361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341 (or 8338 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 80819361 is about 8989.9588986825. The cubic root of 80819361 is about 432.3529940205.

The spelling of 80819361 in words is "eighty million, eight hundred nineteen thousand, three hundred sixty-one".