2780555842 has 8 divisors (see below), whose sum is σ = 4171092156. Its totient is φ = 1390191792.

The previous prime is 2780555837. The next prime is 2780555851. The reversal of 2780555842 is 2485550872.

It can be written as a sum of positive squares in 2 ways, for example, as 2689563321 + 90992521 = 51861^2 + 9539^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2780555792 and 2780555801.

It is an unprimeable number.

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, 10728 + ... + 75340.

Almost surely, 2^2780555842 is an apocalyptic number.

2780555842 is a deficient number, since it is larger than the sum of its proper divisors (1390536314).

2780555842 is a wasteful number, since it uses less digits than its factorization.

2780555842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86132.

The product of its (nonzero) digits is 896000, while the sum is 46.

The square root of 2780555842 is about 52730.9761146141. The cubic root of 2780555842 is about 1406.1895747218.

The spelling of 2780555842 in words is "two billion, seven hundred eighty million, five hundred fifty-five thousand, eight hundred forty-two".