188134445 has 8 divisors (see below), whose sum is σ = 231267960. Its totient is φ = 146836480.

The previous prime is 188134391. The next prime is 188134469. The reversal of 188134445 is 544431881.

It can be written as a sum of positive squares in 4 ways, for example, as 4206601 + 183927844 = 2051^2 + 13562^2 .

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

It is not a de Polignac number, because 188134445 - 2²⁰ = 187085869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188134399 and 188134408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458660 + ... + 459069.

It is an arithmetic number, because the mean of its divisors is an integer number (28908495).

Almost surely, 2^188134445 is an apocalyptic number.

It is an amenable number.

188134445 is a deficient number, since it is larger than the sum of its proper divisors (43133515).

188134445 is an equidigital number, since it uses as much as digits as its factorization.

188134445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917775.

The product of its digits is 61440, while the sum is 38.

The square root of 188134445 is about 13716.2110292894. The cubic root of 188134445 is about 573.0019573796.

The spelling of 188134445 in words is "one hundred eighty-eight million, one hundred thirty-four thousand, four hundred forty-five".