2857387489 has 8 divisors (see below), whose sum is σ = 3300511968. Its totient is φ = 2444823360.

The previous prime is 2857387483. The next prime is 2857387501. The reversal of 2857387489 is 9847837582.

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 2857387489 - 2⁷ = 2857387361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2857387483) 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, 7639887 + ... + 7640260.

It is an arithmetic number, because the mean of its divisors is an integer number (412563996).

Almost surely, 2^2857387489 is an apocalyptic number.

It is an amenable number.

2857387489 is a deficient number, since it is larger than the sum of its proper divisors (443124479).

2857387489 is a wasteful number, since it uses less digits than its factorization.

2857387489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15280175.

The product of its digits is 27095040, while the sum is 61.

The square root of 2857387489 is about 53454.5366549931. The cubic root of 2857387489 is about 1419.0239091451.

The spelling of 2857387489 in words is "two billion, eight hundred fifty-seven million, three hundred eighty-seven thousand, four hundred eighty-nine".