189316549 has 8 divisors (see below), whose sum is σ = 191544920. Its totient is φ = 187094016.

The previous prime is 189316537. The next prime is 189316559. The reversal of 189316549 is 945613981.

It can be written as a sum of positive squares in 4 ways, for example, as 27899524 + 161417025 = 5282^2 + 12705^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189316549 - 2⁹ = 189316037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189316499 and 189316508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189316559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116857 + ... + 118465.

It is an arithmetic number, because the mean of its divisors is an integer number (23943115).

Almost surely, 2^189316549 is an apocalyptic number.

It is an amenable number.

189316549 is a deficient number, since it is larger than the sum of its proper divisors (2228371).

189316549 is a wasteful number, since it uses less digits than its factorization.

189316549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919.

The product of its digits is 233280, while the sum is 46.

The square root of 189316549 is about 13759.2350441440. The cubic root of 189316549 is about 574.1995657861.

The spelling of 189316549 in words is "one hundred eighty-nine million, three hundred sixteen thousand, five hundred forty-nine".