189616550 has 12 divisors (see below), whose sum is σ = 352686876. Its totient is φ = 75846600.

The previous prime is 189616543. The next prime is 189616573. The reversal of 189616550 is 55616981.

189616550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 189616498 and 189616507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1896116 + ... + 1896215.

It is an arithmetic number, because the mean of its divisors is an integer number (29390573).

Almost surely, 2^189616550 is an apocalyptic number.

189616550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189616550 is a deficient number, since it is larger than the sum of its proper divisors (163070326).

189616550 is a wasteful number, since it uses less digits than its factorization.

189616550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792343 (or 3792338 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 189616550 is about 13770.1325338575. The cubic root of 189616550 is about 574.5027080345.

The spelling of 189616550 in words is "one hundred eighty-nine million, six hundred sixteen thousand, five hundred fifty".