189986102 has 4 divisors (see below), whose sum is σ = 284979156. Its totient is φ = 94993050.

The previous prime is 189986099. The next prime is 189986113. The reversal of 189986102 is 201689981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201689981 = 1879 ⋅107339.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47496524 + ... + 47496527.

It is an arithmetic number, because the mean of its divisors is an integer number (71244789).

Almost surely, 2^189986102 is an apocalyptic number.

189986102 is a deficient number, since it is larger than the sum of its proper divisors (94993054).

189986102 is an equidigital number, since it uses as much as digits as its factorization.

189986102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94993053.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 189986102 is about 13783.5446094247. The cubic root of 189986102 is about 574.8756903296.

The spelling of 189986102 in words is "one hundred eighty-nine million, nine hundred eighty-six thousand, one hundred two".