98491358789 has 2 divisors, whose sum is σ = 98491358790. Its totient is φ = 98491358788.

The previous prime is 98491358731. The next prime is 98491358807. The reversal of 98491358789 is 98785319489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69732964900 + 28758393889 = 264070^2 + 169583^2 .

It is a cyclic number.

It is not a de Polignac number, because 98491358789 - 2¹⁶ = 98491293253 is a prime.

It is a super-2 number, since 2×98491358789² (a number of 23 digits) contains 22 as substring.

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 (98497358789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49245679394 + 49245679395.

It is an arithmetic number, because the mean of its divisors is an integer number (49245679395).

Almost surely, 2^98491358789 is an apocalyptic number.

It is an amenable number.

98491358789 is a deficient number, since it is larger than the sum of its proper divisors (1).

98491358789 is an equidigital number, since it uses as much as digits as its factorization.

98491358789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156764160, while the sum is 71.

The spelling of 98491358789 in words is "ninety-eight billion, four hundred ninety-one million, three hundred fifty-eight thousand, seven hundred eighty-nine".