4278802805 has 4 divisors (see below), whose sum is σ = 5134563372. Its totient is φ = 3423042240.

The previous prime is 4278802757. The next prime is 4278802813. The reversal of 4278802805 is 5082088724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3127829329 + 1150973476 = 55927^2 + 33926^2 .

It is not a de Polignac number, because 4278802805 - 2⁶ = 4278802741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427880276 + ... + 427880285.

It is an arithmetic number, because the mean of its divisors is an integer number (1283640843).

Almost surely, 2^4278802805 is an apocalyptic number.

It is an amenable number.

4278802805 is a deficient number, since it is larger than the sum of its proper divisors (855760567).

4278802805 is an equidigital number, since it uses as much as digits as its factorization.

4278802805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855760566.

The product of its (nonzero) digits is 286720, while the sum is 44.

The square root of 4278802805 is about 65412.5584654812. The cubic root of 4278802805 is about 1623.4568773416.

The spelling of 4278802805 in words is "four billion, two hundred seventy-eight million, eight hundred two thousand, eight hundred five".