98190781889 has 16 divisors (see below), whose sum is σ = 101572713216. Its totient is φ = 94875883200.

The previous prime is 98190781877. The next prime is 98190781907. The reversal of 98190781889 is 98818709189.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98190781889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98190781489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158764 + ... + 1240610.

It is an arithmetic number, because the mean of its divisors is an integer number (6348294576).

Almost surely, 2^98190781889 is an apocalyptic number.

It is an amenable number.

98190781889 is a deficient number, since it is larger than the sum of its proper divisors (3381931327).

98190781889 is a wasteful number, since it uses less digits than its factorization.

98190781889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82256.

The product of its (nonzero) digits is 20901888, while the sum is 68.

The spelling of 98190781889 in words is "ninety-eight billion, one hundred ninety million, seven hundred eighty-one thousand, eight hundred eighty-nine".