2780541803 has 4 divisors (see below), whose sum is σ = 2994429648. Its totient is φ = 2566653960.

The previous prime is 2780541791. The next prime is 2780541821. The reversal of 2780541803 is 3081450872.

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

It is not a de Polignac number, because 2780541803 - 2⁶ = 2780541739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780541893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106943903 + ... + 106943928.

It is an arithmetic number, because the mean of its divisors is an integer number (748607412).

Almost surely, 2^2780541803 is an apocalyptic number.

2780541803 is a deficient number, since it is larger than the sum of its proper divisors (213887845).

2780541803 is a wasteful number, since it uses less digits than its factorization.

2780541803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213887844.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 2780541803 is about 52730.8429953476. The cubic root of 2780541803 is about 1406.1872081052.

The spelling of 2780541803 in words is "two billion, seven hundred eighty million, five hundred forty-one thousand, eight hundred three".