2778353803 has 2 divisors, whose sum is σ = 2778353804. Its totient is φ = 2778353802.

The previous prime is 2778353779. The next prime is 2778353821. The reversal of 2778353803 is 3083538772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2778353803 - 2²⁹ = 2241482891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2778353833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389176901 + 1389176902.

It is an arithmetic number, because the mean of its divisors is an integer number (1389176902).

Almost surely, 2^2778353803 is an apocalyptic number.

2778353803 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778353803 is an equidigital number, since it uses as much as digits as its factorization.

2778353803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 2778353803 is about 52710.0920412780. The cubic root of 2778353803 is about 1405.8182698182.

The spelling of 2778353803 in words is "two billion, seven hundred seventy-eight million, three hundred fifty-three thousand, eight hundred three".