2643453506 has 8 divisors (see below), whose sum is σ = 4006058700. Its totient is φ = 1308100608.

The previous prime is 2643453499. The next prime is 2643453529. The reversal of 2643453506 is 6053543462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2306400625 + 337052881 = 48025^2 + 18359^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2643453506.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6812831 + ... + 6813218.

Almost surely, 2^2643453506 is an apocalyptic number.

2643453506 is a deficient number, since it is larger than the sum of its proper divisors (1362605194).

2643453506 is a wasteful number, since it uses less digits than its factorization.

2643453506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13626148.

The product of its (nonzero) digits is 259200, while the sum is 38.

The square root of 2643453506 is about 51414.5262158468. The cubic root of 2643453506 is about 1382.6870396704.

Adding to 2643453506 its reverse (6053543462), we get a palindrome (8696996968).

The spelling of 2643453506 in words is "two billion, six hundred forty-three million, four hundred fifty-three thousand, five hundred six".