189789802 has 16 divisors (see below), whose sum is σ = 302398920. Its totient is φ = 89026048.

The previous prime is 189789791. The next prime is 189789827. The reversal of 189789802 is 208987981.

It can be written as a sum of positive squares in 4 ways, for example, as 162027441 + 27762361 = 12729^2 + 5269^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189789802.

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, 1974 + ... + 19582.

Almost surely, 2^189789802 is an apocalyptic number.

189789802 is a deficient number, since it is larger than the sum of its proper divisors (112609118).

189789802 is a wasteful number, since it uses less digits than its factorization.

189789802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17945.

The product of its (nonzero) digits is 580608, while the sum is 52.

The square root of 189789802 is about 13776.4219592752. The cubic root of 189789802 is about 574.6776284972.

The spelling of 189789802 in words is "one hundred eighty-nine million, seven hundred eighty-nine thousand, eight hundred two".