189261115 has 8 divisors (see below), whose sum is σ = 228902400. Its totient is φ = 150216192.

The previous prime is 189261113. The next prime is 189261143. The reversal of 189261115 is 511162981.

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 189261115 - 2¹ = 189261113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189261113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148390 + ... + 149659.

It is an arithmetic number, because the mean of its divisors is an integer number (28612800).

Almost surely, 2^189261115 is an apocalyptic number.

189261115 is a deficient number, since it is larger than the sum of its proper divisors (39641285).

189261115 is a wasteful number, since it uses less digits than its factorization.

189261115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298181.

The product of its digits is 4320, while the sum is 34.

The square root of 189261115 is about 13757.2204678125. The cubic root of 189261115 is about 574.1435162998.

The spelling of 189261115 in words is "one hundred eighty-nine million, two hundred sixty-one thousand, one hundred fifteen".