188413145 has 16 divisors (see below), whose sum is σ = 238314960. Its totient is φ = 142781184.

The previous prime is 188413129. The next prime is 188413153. The reversal of 188413145 is 541314881.

It can be written as a sum of positive squares in 8 ways, for example, as 1708249 + 186704896 = 1307^2 + 13664^2 .

It is a cyclic number.

It is not a de Polignac number, because 188413145 - 2⁴ = 188413129 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 4574 + ... + 19943.

It is an arithmetic number, because the mean of its divisors is an integer number (14894685).

Almost surely, 2^188413145 is an apocalyptic number.

It is an amenable number.

188413145 is a deficient number, since it is larger than the sum of its proper divisors (49901815).

188413145 is a wasteful number, since it uses less digits than its factorization.

188413145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24604.

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

The square root of 188413145 is about 13726.3667807618. The cubic root of 188413145 is about 573.2847637406.

The spelling of 188413145 in words is "one hundred eighty-eight million, four hundred thirteen thousand, one hundred forty-five".