2540816426 has 8 divisors (see below), whose sum is σ = 3817653444. Its totient is φ = 1268265280.

The previous prime is 2540816423. The next prime is 2540816441. The reversal of 2540816426 is 6246180452.

It can be written as a sum of positive squares in 2 ways, for example, as 2535223201 + 5593225 = 50351^2 + 2365^2 .

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

It is a super-2 number, since 2×2540816426² = 12911496221262826952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2540816426.

It is not an unprimeable number, because it can be changed into a prime (2540816423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069985 + ... + 1072356.

Almost surely, 2^2540816426 is an apocalyptic number.

2540816426 is a deficient number, since it is larger than the sum of its proper divisors (1276837018).

2540816426 is a wasteful number, since it uses less digits than its factorization.

2540816426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142936.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2540816426 is about 50406.5117420359. The cubic root of 2540816426 is about 1364.5551603197. Note that the first 3 decimals are identical.

Adding to 2540816426 its reverse (6246180452), we get a palindrome (8786996878).

The spelling of 2540816426 in words is "two billion, five hundred forty million, eight hundred sixteen thousand, four hundred twenty-six".