274928189 has 4 divisors (see below), whose sum is σ = 275268000. Its totient is φ = 274588380.

The previous prime is 274928183. The next prime is 274928191. The reversal of 274928189 is 981829472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-274928189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274928183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168689 + ... + 170310.

It is an arithmetic number, because the mean of its divisors is an integer number (68817000).

Almost surely, 2^274928189 is an apocalyptic number.

It is an amenable number.

274928189 is a deficient number, since it is larger than the sum of its proper divisors (339811).

274928189 is an equidigital number, since it uses as much as digits as its factorization.

274928189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339810.

The product of its digits is 580608, while the sum is 50.

The square root of 274928189 is about 16580.9586272929. The cubic root of 274928189 is about 650.2391143935.

The spelling of 274928189 in words is "two hundred seventy-four million, nine hundred twenty-eight thousand, one hundred eighty-nine".