188157245 has 8 divisors (see below), whose sum is σ = 229490520. Its totient is φ = 148057920.

The previous prime is 188157187. The next prime is 188157251. The reversal of 188157245 is 542751881.

It can be written as a sum of positive squares in 4 ways, for example, as 6285049 + 181872196 = 2507^2 + 13486^2 .

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

It is not a de Polignac number, because 188157245 - 2¹⁴ = 188140861 is a prime.

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, 308150 + ... + 308759.

It is an arithmetic number, because the mean of its divisors is an integer number (28686315).

Almost surely, 2^188157245 is an apocalyptic number.

It is an amenable number.

188157245 is a deficient number, since it is larger than the sum of its proper divisors (41333275).

188157245 is an equidigital number, since it uses as much as digits as its factorization.

188157245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616975.

The product of its digits is 89600, while the sum is 41.

The square root of 188157245 is about 13717.0421374289. The cubic root of 188157245 is about 573.0251038000.

The spelling of 188157245 in words is "one hundred eighty-eight million, one hundred fifty-seven thousand, two hundred forty-five".