98178887189 has 2 divisors, whose sum is σ = 98178887190. Its totient is φ = 98178887188.

The previous prime is 98178887179. The next prime is 98178887227.

98178887189 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70043856964 + 28135030225 = 264658^2 + 167735^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 98178887189 - 2⁸ = 98178886933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98178887129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49089443594 + 49089443595.

It is an arithmetic number, because the mean of its divisors is an integer number (49089443595).

Almost surely, 2^98178887189 is an apocalyptic number.

It is an amenable number.

98178887189 is a deficient number, since it is larger than the sum of its proper divisors (1).

98178887189 is an equidigital number, since it uses as much as digits as its factorization.

98178887189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130056192, while the sum is 74.

The spelling of 98178887189 in words is "ninety-eight billion, one hundred seventy-eight million, eight hundred eighty-seven thousand, one hundred eighty-nine".