188045449 has 16 divisors (see below), whose sum is σ = 206841600. Its totient is φ = 170239744.

The previous prime is 188045441. The next prime is 188045467. The reversal of 188045449 is 944540881.

It is a cyclic number.

It is not a de Polignac number, because 188045449 - 2³ = 188045441 is a prime.

It is a super-2 number, since 2×188045449² = 70722181779223202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188045441) 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 15 ways as a sum of consecutive naturals, for example, 45147 + ... + 49135.

It is an arithmetic number, because the mean of its divisors is an integer number (12927600).

Almost surely, 2^188045449 is an apocalyptic number.

It is an amenable number.

188045449 is a deficient number, since it is larger than the sum of its proper divisors (18796151).

188045449 is a wasteful number, since it uses less digits than its factorization.

188045449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 188045449 is about 13712.9664551475. The cubic root of 188045449 is about 572.9115912848.

The spelling of 188045449 in words is "one hundred eighty-eight million, forty-five thousand, four hundred forty-nine".