80745493 has 2 divisors, whose sum is σ = 80745494. Its totient is φ = 80745492.

The previous prime is 80745491. The next prime is 80745499. The reversal of 80745493 is 39454708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80676324 + 69169 = 8982^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 80745493 - 2¹ = 80745491 is a prime.

Together with 80745491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80745491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40372746 + 40372747.

It is an arithmetic number, because the mean of its divisors is an integer number (40372747).

Almost surely, 2^80745493 is an apocalyptic number.

It is an amenable number.

80745493 is a deficient number, since it is larger than the sum of its proper divisors (1).

80745493 is an equidigital number, since it uses as much as digits as its factorization.

80745493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 80745493 is about 8985.8495981181. The cubic root of 80745493 is about 432.2212319214.

The spelling of 80745493 in words is "eighty million, seven hundred forty-five thousand, four hundred ninety-three".