80194589 has 2 divisors, whose sum is σ = 80194590. Its totient is φ = 80194588.

The previous prime is 80194567. The next prime is 80194601. The reversal of 80194589 is 98549108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79959364 + 235225 = 8942^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 80194589 - 2¹² = 80190493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80194519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40097294 + 40097295.

It is an arithmetic number, because the mean of its divisors is an integer number (40097295).

Almost surely, 2^80194589 is an apocalyptic number.

It is an amenable number.

80194589 is a deficient number, since it is larger than the sum of its proper divisors (1).

80194589 is an equidigital number, since it uses as much as digits as its factorization.

80194589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 80194589 is about 8955.1431591014. The cubic root of 80194589 is about 431.2360128769.

The spelling of 80194589 in words is "eighty million, one hundred ninety-four thousand, five hundred eighty-nine".