2740297778 has 8 divisors (see below), whose sum is σ = 4111175280. Its totient is φ = 1369906020.

The previous prime is 2740297751. The next prime is 2740297787. The reversal of 2740297778 is 8777920472.

It is a happy number.

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

It is a super-2 number, since 2×2740297778² = 15018463824223474568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106988 + ... + 130103.

It is an arithmetic number, because the mean of its divisors is an integer number (513896910).

Almost surely, 2^2740297778 is an apocalyptic number.

2740297778 is a deficient number, since it is larger than the sum of its proper divisors (1370877502).

2740297778 is a wasteful number, since it uses less digits than its factorization.

2740297778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242872.

The product of its (nonzero) digits is 2765952, while the sum is 53.

The square root of 2740297778 is about 52347.8536140690. The cubic root of 2740297778 is about 1399.3700870290.

The spelling of 2740297778 in words is "two billion, seven hundred forty million, two hundred ninety-seven thousand, seven hundred seventy-eight".