80019693 has 18 divisors (see below), whose sum is σ = 124625774. Its totient is φ = 49183344.

The previous prime is 80019679. The next prime is 80019721. The reversal of 80019693 is 39691008.

It can be written as a sum of positive squares in only one way, i.e., 55398249 + 24621444 = 7443^2 + 4962^2 .

It is not a de Polignac number, because 80019693 - 2⁵ = 80019661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80019193) 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 17 ways as a sum of consecutive naturals, for example, 96346 + ... + 97172.

Almost surely, 2^80019693 is an apocalyptic number.

It is an amenable number.

80019693 is a deficient number, since it is larger than the sum of its proper divisors (44606081).

80019693 is an equidigital number, since it uses as much as digits as its factorization.

80019693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 80019693 is about 8945.3727144262. The cubic root of 80019693 is about 430.9222911743.

The spelling of 80019693 in words is "eighty million, nineteen thousand, six hundred ninety-three".