189898916 has 6 divisors (see below), whose sum is σ = 332323110. Its totient is φ = 94949456.

The previous prime is 189898897. The next prime is 189898949. The reversal of 189898916 is 619898981.

189898916 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 97930816 + 91968100 = 9896^2 + 9590^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23737361 + ... + 23737368.

It is an arithmetic number, because the mean of its divisors is an integer number (55387185).

Almost surely, 2^189898916 is an apocalyptic number.

It is an amenable number.

189898916 is a deficient number, since it is larger than the sum of its proper divisors (142424194).

189898916 is a wasteful number, since it uses less digits than its factorization.

189898916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47474733 (or 47474731 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 59.

The square root of 189898916 is about 13780.3815622065. The cubic root of 189898916 is about 574.7877386666.

The spelling of 189898916 in words is "one hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred sixteen".