2421806144 has 14 divisors (see below), whose sum is σ = 4805771694. Its totient is φ = 1210903040.

The previous prime is 2421806141. The next prime is 2421806147. The reversal of 2421806144 is 4416081242.

It is an interprime number because it is at equal distance from previous prime (2421806141) and next prime (2421806147).

It can be written as a sum of positive squares in only one way, i.e., 2032927744 + 388878400 = 45088^2 + 19720^2 .

It is a super-2 number, since 2×2421806144² = 11730289998232297472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 2421806144.

It is not an unprimeable number, because it can be changed into a prime (2421806141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18920297 + ... + 18920424.

Almost surely, 2^2421806144 is an apocalyptic number.

It is an amenable number.

2421806144 is a deficient number, since it is larger than the sum of its proper divisors (2383965550).

2421806144 is an equidigital number, since it uses as much as digits as its factorization.

2421806144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37840733 (or 37840723 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2421806144 is about 49211.8496299418. The cubic root of 2421806144 is about 1342.9086118107.

Adding to 2421806144 its reverse (4416081242), we get a palindrome (6837887386).

The spelling of 2421806144 in words is "two billion, four hundred twenty-one million, eight hundred six thousand, one hundred forty-four".