189057127249 has 3 divisors (see below), whose sum is σ = 189057562057. Its totient is φ = 189056692442.

The previous prime is 189057127229. The next prime is 189057127289. The reversal of 189057127249 is 942721750981.

The square root of 189057127249 is 434807.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 189057127249 - 2⁷ = 189057127121 is a prime.

It is a super-3 number, since 3×189057127249³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189057127249.

It is not an unprimeable number, because it can be changed into a prime (189057127229) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 217404 + ... + 652210.

Almost surely, 2^189057127249 is an apocalyptic number.

189057127249 is the 434807-th square number.

189057127249 is the 217404-th centered octagonal number.

It is an amenable number.

189057127249 is a deficient number, since it is larger than the sum of its proper divisors (434808).

189057127249 is an frugal number, since it uses more digits than its factorization.

189057127249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869614 (or 434807 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 189057127249 in words is "one hundred eighty-nine billion, fifty-seven million, one hundred twenty-seven thousand, two hundred forty-nine".