189608815 has 48 divisors (see below), whose sum is σ = 263723040. Its totient is φ = 130592000.

The previous prime is 189608807. The next prime is 189608819. The reversal of 189608815 is 518806981.

It is not a de Polignac number, because 189608815 - 2³ = 189608807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189608819) 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 47 ways as a sum of consecutive naturals, for example, 1771992 + ... + 1772098.

It is an arithmetic number, because the mean of its divisors is an integer number (5494230).

Almost surely, 2^189608815 is an apocalyptic number.

189608815 is a deficient number, since it is larger than the sum of its proper divisors (74114225).

189608815 is a wasteful number, since it uses less digits than its factorization.

189608815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 46.

The square root of 189608815 is about 13769.8516694988. The cubic root of 189608815 is about 574.4948960601.

The spelling of 189608815 in words is "one hundred eighty-nine million, six hundred eight thousand, eight hundred fifteen".