188145733 has 8 divisors (see below), whose sum is σ = 200275200. Its totient is φ = 176239008.

The previous prime is 188145731. The next prime is 188145739. The reversal of 188145733 is 337541881.

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

It is a cyclic number.

It is not a de Polignac number, because 188145733 - 2¹ = 188145731 is a prime.

It is a super-2 number, since 2×188145733² = 70797633692214578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188145731) 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 7 ways as a sum of consecutive naturals, for example, 53941 + ... + 57322.

It is an arithmetic number, because the mean of its divisors is an integer number (25034400).

Almost surely, 2^188145733 is an apocalyptic number.

It is an amenable number.

188145733 is a deficient number, since it is larger than the sum of its proper divisors (12129467).

188145733 is a wasteful number, since it uses less digits than its factorization.

188145733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111371.

The product of its digits is 80640, while the sum is 40.

The square root of 188145733 is about 13716.6225070168. The cubic root of 188145733 is about 573.0134171218.

The spelling of 188145733 in words is "one hundred eighty-eight million, one hundred forty-five thousand, seven hundred thirty-three".