2805378356 has 96 divisors (see below), whose sum is σ = 5809176576. Its totient is φ = 1172160000.

The previous prime is 2805378293. The next prime is 2805378409. The reversal of 2805378356 is 6538735082.

It is a self number, because there is not a number n which added to its sum of digits gives 2805378356.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 6995756 + ... + 6996156.

It is an arithmetic number, because the mean of its divisors is an integer number (60512256).

Almost surely, 2^2805378356 is an apocalyptic number.

It is an amenable number.

2805378356 is an abundant number, since it is smaller than the sum of its proper divisors (3003798220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2805378356 is a wasteful number, since it uses less digits than its factorization.

2805378356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The square root of 2805378356 is about 52965.8225273619. The cubic root of 2805378356 is about 1410.3616187656.

The spelling of 2805378356 in words is "two billion, eight hundred five million, three hundred seventy-eight thousand, three hundred fifty-six".