189898982 has 16 divisors (see below), whose sum is σ = 350583072. Its totient is φ = 75124800.

The previous prime is 189898981. The next prime is 189899009. The reversal of 189898982 is 289898981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189898981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521519 + ... + 521882.

It is an arithmetic number, because the mean of its divisors is an integer number (21911442).

Almost surely, 2^189898982 is an apocalyptic number.

189898982 is a deficient number, since it is larger than the sum of its proper divisors (160684090).

189898982 is a wasteful number, since it uses less digits than its factorization.

189898982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043423.

The product of its digits is 5971968, while the sum is 62.

The square root of 189898982 is about 13780.3839569150. The cubic root of 189898982 is about 574.7878052564.

Subtracting 189898982 from its reverse (289898981), we obtain a palindrome (99999999).

The spelling of 189898982 in words is "one hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-two".