188065361 has 4 divisors (see below), whose sum is σ = 205162224. Its totient is φ = 170968500.

The previous prime is 188065327. The next prime is 188065387. The reversal of 188065361 is 163560881.

It is a happy number.

188065361 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163560881 = 11 ⋅14869171.

It is a cyclic number.

It is not a de Polignac number, because 188065361 - 2²² = 183871057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188065321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8548415 + ... + 8548436.

It is an arithmetic number, because the mean of its divisors is an integer number (51290556).

Almost surely, 2^188065361 is an apocalyptic number.

188065361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

188065361 is a deficient number, since it is larger than the sum of its proper divisors (17096863).

188065361 is a wasteful number, since it uses less digits than its factorization.

188065361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17096862.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 188065361 is about 13713.6924641032. The cubic root of 188065361 is about 572.9318123059.

The spelling of 188065361 in words is "one hundred eighty-eight million, sixty-five thousand, three hundred sixty-one".