2246778578 has 30 divisors (see below), whose sum is σ = 3720593205. Its totient is φ = 1017576120.

The previous prime is 2246778577. The next prime is 2246778613. The reversal of 2246778578 is 8758776422.

It can be written as a sum of positive squares in 2 ways, for example, as 1971981649 + 274796929 = 44407^2 + 16577^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33517.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2246778577) 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 14 ways as a sum of consecutive naturals, for example, 8110976 + ... + 8111252.

Almost surely, 2^2246778578 is an apocalyptic number.

2246778578 is a deficient number, since it is larger than the sum of its proper divisors (1473814627).

2246778578 is an frugal number, since it uses more digits than its factorization.

2246778578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 290 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 56.

The square root of 2246778578 is about 47400.1959700590. The cubic root of 2246778578 is about 1309.7450270036.

The spelling of 2246778578 in words is "two billion, two hundred forty-six million, seven hundred seventy-eight thousand, five hundred seventy-eight".