188993065 has 16 divisors (see below), whose sum is σ = 230283648. Its totient is φ = 148884736.

The previous prime is 188993027. The next prime is 188993083. The reversal of 188993065 is 560399881.

188993065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 188993065 - 2¹⁵ = 188960297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93354 + ... + 95356.

It is an arithmetic number, because the mean of its divisors is an integer number (14392728).

Almost surely, 2^188993065 is an apocalyptic number.

It is an amenable number.

188993065 is a deficient number, since it is larger than the sum of its proper divisors (41290583).

188993065 is a wasteful number, since it uses less digits than its factorization.

188993065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 188993065 is about 13747.4748590423. The cubic root of 188993065 is about 573.8723356042.

The spelling of 188993065 in words is "one hundred eighty-eight million, nine hundred ninety-three thousand, sixty-five".