981111098 has 16 divisors (see below), whose sum is σ = 1606194144. Its totient is φ = 445754160.

The previous prime is 981111077. The next prime is 981111119. The reversal of 981111098 is 890111189.

It is an interprime number because it is at equal distance from previous prime (981111077) and next prime (981111119).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45236 + ... + 63312.

It is an arithmetic number, because the mean of its divisors is an integer number (100387134).

Almost surely, 2^981111098 is an apocalyptic number.

981111098 is a deficient number, since it is larger than the sum of its proper divisors (625083046).

981111098 is a wasteful number, since it uses less digits than its factorization.

981111098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20557.

The product of its (nonzero) digits is 5184, while the sum is 38.

The square root of 981111098 is about 31322.6930195984. The cubic root of 981111098 is about 993.6636346076.

Subtracting from 981111098 its reverse (890111189), we obtain a palindrome (90999909).

The spelling of 981111098 in words is "nine hundred eighty-one million, one hundred eleven thousand, ninety-eight".