188500238 has 8 divisors (see below), whose sum is σ = 284186232. Its totient is φ = 93771496.

The previous prime is 188500231. The next prime is 188500271. The reversal of 188500238 is 832005881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 188500198 and 188500207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188500231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238820 + ... + 239607.

It is an arithmetic number, because the mean of its divisors is an integer number (35523279).

Almost surely, 2^188500238 is an apocalyptic number.

188500238 is a deficient number, since it is larger than the sum of its proper divisors (95685994).

188500238 is a wasteful number, since it uses less digits than its factorization.

188500238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478626.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 188500238 is about 13729.5388851920. The cubic root of 188500238 is about 573.3730827708.

The spelling of 188500238 in words is "one hundred eighty-eight million, five hundred thousand, two hundred thirty-eight".