2528779165 has 8 divisors (see below), whose sum is σ = 3310401888. Its totient is φ = 1839112080.

The previous prime is 2528779159. The next prime is 2528779199. The reversal of 2528779165 is 5619778252.

It is a happy number.

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

It is not a de Polignac number, because 2528779165 - 2⁷ = 2528779037 is a prime.

It is a Duffinian number.

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, 22988847 + ... + 22988956.

It is an arithmetic number, because the mean of its divisors is an integer number (413800236).

Almost surely, 2^2528779165 is an apocalyptic number.

It is an amenable number.

2528779165 is a deficient number, since it is larger than the sum of its proper divisors (781622723).

2528779165 is a wasteful number, since it uses less digits than its factorization.

2528779165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45977819.

The product of its digits is 2116800, while the sum is 52.

The square root of 2528779165 is about 50286.9681428499. The cubic root of 2528779165 is about 1362.3968627146.

The spelling of 2528779165 in words is "two billion, five hundred twenty-eight million, seven hundred seventy-nine thousand, one hundred sixty-five".