2857541389 has 8 divisors (see below), whose sum is σ = 2887923960. Its totient is φ = 2827200000.

The previous prime is 2857541387. The next prime is 2857541399. The reversal of 2857541389 is 9831457582.

It is a happy number.

2857541389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 321915364 + 2535626025 = 17942^2 + 50355^2 .

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 2857541389 - 2¹ = 2857541387 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 (2857541381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140889 + ... + 159889.

It is an arithmetic number, because the mean of its divisors is an integer number (360990495).

Almost surely, 2^2857541389 is an apocalyptic number.

It is an amenable number.

2857541389 is a deficient number, since it is larger than the sum of its proper divisors (30382571).

2857541389 is a wasteful number, since it uses less digits than its factorization.

2857541389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20591.

The product of its digits is 2419200, while the sum is 52.

The square root of 2857541389 is about 53455.9761766634. The cubic root of 2857541389 is about 1419.0493850807.

The spelling of 2857541389 in words is "two billion, eight hundred fifty-seven million, five hundred forty-one thousand, three hundred eighty-nine".