2778724741 has 8 divisors (see below), whose sum is σ = 3056143104. Its totient is φ = 2510402160.

The previous prime is 2778724721. The next prime is 2778724747. The reversal of 2778724741 is 1474278772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2778724741 - 2⁹ = 2778724229 is a prime.

It is a super-2 number, since 2×2778724741² = 15442622372491034162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778724747) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2273305 + ... + 2274526.

It is an arithmetic number, because the mean of its divisors is an integer number (382017888).

Almost surely, 2^2778724741 is an apocalyptic number.

It is an amenable number.

2778724741 is a deficient number, since it is larger than the sum of its proper divisors (277418363).

2778724741 is a wasteful number, since it uses less digits than its factorization.

2778724741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547891.

The product of its digits is 1229312, while the sum is 49.

The square root of 2778724741 is about 52713.6105858819. The cubic root of 2778724741 is about 1405.8808306304.

The spelling of 2778724741 in words is "two billion, seven hundred seventy-eight million, seven hundred twenty-four thousand, seven hundred forty-one".