188889115 has 8 divisors (see below), whose sum is σ = 226851840. Its totient is φ = 150988032.

The previous prime is 188889083. The next prime is 188889119. The reversal of 188889115 is 511988881.

It is a happy number.

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 188889115 - 2⁵ = 188889083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (188889119) 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, 8374 + ... + 21163.

It is an arithmetic number, because the mean of its divisors is an integer number (28356480).

Almost surely, 2^188889115 is an apocalyptic number.

188889115 is a deficient number, since it is larger than the sum of its proper divisors (37962725).

188889115 is a wasteful number, since it uses less digits than its factorization.

188889115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30821.

The product of its digits is 184320, while the sum is 49.

The square root of 188889115 is about 13743.6936447230. The cubic root of 188889115 is about 573.7671025196.

The spelling of 188889115 in words is "one hundred eighty-eight million, eight hundred eighty-nine thousand, one hundred fifteen".