2778381411 has 16 divisors (see below), whose sum is σ = 3990756000. Its totient is φ = 1709222400.

The previous prime is 2778381409. The next prime is 2778381421. The reversal of 2778381411 is 1141838772.

It is not a de Polignac number, because 2778381411 - 2¹ = 2778381409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2778381401) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 134715 + ... + 153963.

It is an arithmetic number, because the mean of its divisors is an integer number (249422250).

Almost surely, 2^2778381411 is an apocalyptic number.

2778381411 is a deficient number, since it is larger than the sum of its proper divisors (1212374589).

2778381411 is a wasteful number, since it uses less digits than its factorization.

2778381411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22966.

The product of its digits is 75264, while the sum is 42.

The square root of 2778381411 is about 52710.3539259603. The cubic root of 2778381411 is about 1405.8229262569.

The spelling of 2778381411 in words is "two billion, seven hundred seventy-eight million, three hundred eighty-one thousand, four hundred eleven".