80318819 has 4 divisors (see below), whose sum is σ = 91792944. Its totient is φ = 68844696.

The previous prime is 80318809. The next prime is 80318831. The reversal of 80318819 is 91881308.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80318819 - 2⁴ = 80318803 is a prime.

It is a super-2 number, since 2×80318819² = 12902225371109522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80318809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5737052 + ... + 5737065.

It is an arithmetic number, because the mean of its divisors is an integer number (22948236).

Almost surely, 2^80318819 is an apocalyptic number.

80318819 is a deficient number, since it is larger than the sum of its proper divisors (11474125).

80318819 is a wasteful number, since it uses less digits than its factorization.

80318819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11474124.

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

The square root of 80318819 is about 8962.0767124590. The cubic root of 80318819 is about 431.4585749025.

The spelling of 80318819 in words is "eighty million, three hundred eighteen thousand, eight hundred nineteen".