80357813 has 2 divisors, whose sum is σ = 80357814. Its totient is φ = 80357812.

The previous prime is 80357789. The next prime is 80357839. The reversal of 80357813 is 31875308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 25331089 = 7418^2 + 5033^2 .

It is a cyclic number.

It is not a de Polignac number, because 80357813 - 2²² = 76163509 is a prime.

It is a super-2 number, since 2×80357813² = 12914756220285938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80357843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40178906 + 40178907.

It is an arithmetic number, because the mean of its divisors is an integer number (40178907).

Almost surely, 2^80357813 is an apocalyptic number.

It is an amenable number.

80357813 is a deficient number, since it is larger than the sum of its proper divisors (1).

80357813 is an equidigital number, since it uses as much as digits as its factorization.

80357813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 80357813 is about 8964.2519487127. The cubic root of 80357813 is about 431.5283865769.

The spelling of 80357813 in words is "eighty million, three hundred fifty-seven thousand, eight hundred thirteen".