2528121189 has 8 divisors (see below), whose sum is σ = 3677267232. Its totient is φ = 1532194640.

The previous prime is 2528121173. The next prime is 2528121229. The reversal of 2528121189 is 9811218252.

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

It is a cyclic number.

It is not a de Polignac number, because 2528121189 - 2⁴ = 2528121173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528121109) 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 7 ways as a sum of consecutive naturals, for example, 38304834 + ... + 38304899.

It is an arithmetic number, because the mean of its divisors is an integer number (459658404).

Almost surely, 2^2528121189 is an apocalyptic number.

It is an amenable number.

2528121189 is a deficient number, since it is larger than the sum of its proper divisors (1149146043).

2528121189 is a wasteful number, since it uses less digits than its factorization.

2528121189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76609747.

The product of its digits is 23040, while the sum is 39.

The square root of 2528121189 is about 50280.4255053594. The cubic root of 2528121189 is about 1362.2786894592.

The spelling of 2528121189 in words is "two billion, five hundred twenty-eight million, one hundred twenty-one thousand, one hundred eighty-nine".