2644606450 has 48 divisors (see below), whose sum is σ = 5085906624. Its totient is φ = 1022328000.

The previous prime is 2644606427. The next prime is 2644606451. The reversal of 2644606450 is 546064462.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (2644606451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274617 + ... + 284083.

It is an arithmetic number, because the mean of its divisors is an integer number (105956388).

Almost surely, 2^2644606450 is an apocalyptic number.

2644606450 is a deficient number, since it is larger than the sum of its proper divisors (2441300174).

2644606450 is a wasteful number, since it uses less digits than its factorization.

2644606450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9667 (or 9662 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 2644606450 is about 51425.7372334126. The cubic root of 2644606450 is about 1382.8880304090. Note that the first 3 decimals are identical.

The spelling of 2644606450 in words is "two billion, six hundred forty-four million, six hundred six thousand, four hundred fifty".