2078580857 has 8 divisors (see below), whose sum is σ = 2145827016. Its totient is φ = 2011917312.

The previous prime is 2078580853. The next prime is 2078580859. The reversal of 2078580857 is 7580858702.

It can be written as a sum of positive squares in 4 ways, for example, as 821452921 + 1257127936 = 28661^2 + 35456^2 .

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 2078580857 - 2² = 2078580853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078580853) 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 7 ways as a sum of consecutive naturals, for example, 138398 + ... + 152679.

It is an arithmetic number, because the mean of its divisors is an integer number (268228377).

Almost surely, 2^2078580857 is an apocalyptic number.

It is an amenable number.

2078580857 is a deficient number, since it is larger than the sum of its proper divisors (67246159).

2078580857 is a wasteful number, since it uses less digits than its factorization.

2078580857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291307.

The product of its (nonzero) digits is 1254400, while the sum is 50.

The square root of 2078580857 is about 45591.4559649064. The cubic root of 2078580857 is about 1276.2104832643.

The spelling of 2078580857 in words is "two billion, seventy-eight million, five hundred eighty thousand, eight hundred fifty-seven".