2861028057 has 4 divisors (see below), whose sum is σ = 3814704080. Its totient is φ = 1907352036.

The previous prime is 2861028019. The next prime is 2861028061. The reversal of 2861028057 is 7508201682.

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 not a de Polignac number, because 2861028057 - 2⁶ = 2861027993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2861028077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476838007 + ... + 476838012.

It is an arithmetic number, because the mean of its divisors is an integer number (953676020).

Almost surely, 2^2861028057 is an apocalyptic number.

It is an amenable number.

2861028057 is a deficient number, since it is larger than the sum of its proper divisors (953676023).

2861028057 is an equidigital number, since it uses as much as digits as its factorization.

2861028057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953676022.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 2861028057 is about 53488.5787528515. The cubic root of 2861028057 is about 1419.6263079682.

The spelling of 2861028057 in words is "two billion, eight hundred sixty-one million, twenty-eight thousand, fifty-seven".