189289415 has 16 divisors (see below), whose sum is σ = 265930560. Its totient is φ = 126631680.

The previous prime is 189289411. The next prime is 189289417. The reversal of 189289415 is 514982981.

189289415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189289415 - 2² = 189289411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189289415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189289411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64520 + ... + 67389.

It is an arithmetic number, because the mean of its divisors is an integer number (16620660).

Almost surely, 2^189289415 is an apocalyptic number.

189289415 is a deficient number, since it is larger than the sum of its proper divisors (76641145).

189289415 is a wasteful number, since it uses less digits than its factorization.

189289415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131962.

The product of its digits is 207360, while the sum is 47.

The square root of 189289415 is about 13758.2489801573. The cubic root of 189289415 is about 574.1721318833.

The spelling of 189289415 in words is "one hundred eighty-nine million, two hundred eighty-nine thousand, four hundred fifteen".