188875133 has 2 divisors, whose sum is σ = 188875134. Its totient is φ = 188875132.

The previous prime is 188875111. The next prime is 188875171. The reversal of 188875133 is 331578881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119202724 + 69672409 = 10918^2 + 8347^2 .

It is an emirp because it is prime and its reverse (331578881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188875133 - 2¹⁴ = 188858749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188875433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94437566 + 94437567.

It is an arithmetic number, because the mean of its divisors is an integer number (94437567).

Almost surely, 2^188875133 is an apocalyptic number.

It is an amenable number.

188875133 is a deficient number, since it is larger than the sum of its proper divisors (1).

188875133 is an equidigital number, since it uses as much as digits as its factorization.

188875133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 188875133 is about 13743.1849656475. The cubic root of 188875133 is about 573.7529449902.

The spelling of 188875133 in words is "one hundred eighty-eight million, eight hundred seventy-five thousand, one hundred thirty-three".