89018949793 has 2 divisors, whose sum is σ = 89018949794. Its totient is φ = 89018949792.

The previous prime is 89018949763. The next prime is 89018949809. The reversal of 89018949793 is 39794981098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84173676129 + 4845273664 = 290127^2 + 69608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89018949793 is a prime.

It is not a weakly prime, because it can be changed into another prime (89018949743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44509474896 + 44509474897.

It is an arithmetic number, because the mean of its divisors is an integer number (44509474897).

Almost surely, 2^89018949793 is an apocalyptic number.

It is an amenable number.

89018949793 is a deficient number, since it is larger than the sum of its proper divisors (1).

89018949793 is an equidigital number, since it uses as much as digits as its factorization.

89018949793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35271936, while the sum is 67.

The spelling of 89018949793 in words is "eighty-nine billion, eighteen million, nine hundred forty-nine thousand, seven hundred ninety-three".