4188145 has 8 divisors (see below), whose sum is σ = 5412456. Its totient is φ = 3092736.

The previous prime is 4188133. The next prime is 4188161. The reversal of 4188145 is 5418814.

It can be written as a sum of positive squares in 4 ways, for example, as 42849 + 4145296 = 207^2 + 2036^2 .

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 4188145 - 2⁷ = 4188017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32152 + ... + 32281.

It is an arithmetic number, because the mean of its divisors is an integer number (676557).

Almost surely, 2^4188145 is an apocalyptic number.

It is an amenable number.

4188145 is a deficient number, since it is larger than the sum of its proper divisors (1224311).

4188145 is a wasteful number, since it uses less digits than its factorization.

4188145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64451.

The product of its digits is 5120, while the sum is 31.

The square root of 4188145 is about 2046.4957854831. The cubic root of 4188145 is about 161.1909184030.

The spelling of 4188145 in words is "four million, one hundred eighty-eight thousand, one hundred forty-five".