189406115 has 4 divisors (see below), whose sum is σ = 227287344. Its totient is φ = 151524888.

The previous prime is 189406073. The next prime is 189406123. The reversal of 189406115 is 511604981.

189406115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189406115 - 2¹⁶ = 189340579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18940607 + ... + 18940616.

It is an arithmetic number, because the mean of its divisors is an integer number (56821836).

Almost surely, 2^189406115 is an apocalyptic number.

189406115 is a deficient number, since it is larger than the sum of its proper divisors (37881229).

189406115 is an equidigital number, since it uses as much as digits as its factorization.

189406115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37881228.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 189406115 is about 13762.4894187062. The cubic root of 189406115 is about 574.2901031257.

The spelling of 189406115 in words is "one hundred eighty-nine million, four hundred six thousand, one hundred fifteen".