188742195 has 12 divisors (see below), whose sum is σ = 327153216. Its totient is φ = 100662480.

The previous prime is 188742173. The next prime is 188742221. The reversal of 188742195 is 591247881.

It is not a de Polignac number, because 188742195 - 2¹¹ = 188740147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4194271 = 188742195 / (1 + 8 + 8 + 7 + 4 + 2 + 1 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 188742195.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2097091 + ... + 2097180.

It is an arithmetic number, because the mean of its divisors is an integer number (27262768).

Almost surely, 2^188742195 is an apocalyptic number.

188742195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

188742195 is a deficient number, since it is larger than the sum of its proper divisors (138411021).

188742195 is a wasteful number, since it uses less digits than its factorization.

188742195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194282 (or 4194279 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 188742195 is about 13738.3476080641. The cubic root of 188742195 is about 573.6183031776.

The spelling of 188742195 in words is "one hundred eighty-eight million, seven hundred forty-two thousand, one hundred ninety-five".