189378798 has 16 divisors (see below), whose sum is σ = 432865920. Its totient is φ = 54108216.

The previous prime is 189378769. The next prime is 189378829. The reversal of 189378798 is 897873981.

It is a congruent number.

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, 2254468 + ... + 2254551.

It is an arithmetic number, because the mean of its divisors is an integer number (27054120).

Almost surely, 2^189378798 is an apocalyptic number.

189378798 is an abundant number, since it is smaller than the sum of its proper divisors (243487122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189378798 is a wasteful number, since it uses less digits than its factorization.

189378798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509031.

The product of its digits is 6096384, while the sum is 60.

The square root of 189378798 is about 13761.4969389235. The cubic root of 189378798 is about 574.2624928996.

The spelling of 189378798 in words is "one hundred eighty-nine million, three hundred seventy-eight thousand, seven hundred ninety-eight".