2646326144 has 192 divisors, whose sum is σ = 6766798320. Its totient is φ = 1027783680.

The previous prime is 2646326143. The next prime is 2646326171. The reversal of 2646326144 is 4416236462.

It is a junction number, because it is equal to n+sod(n) for n = 2646326098 and 2646326107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646326141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8347874 + ... + 8348190.

Almost surely, 2^2646326144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646326144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3383399160).

2646326144 is an abundant number, since it is smaller than the sum of its proper divisors (4120472176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2646326144 is an equidigital number, since it uses as much as digits as its factorization.

2646326144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 337 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The square root of 2646326144 is about 51442.4546848223. The cubic root of 2646326144 is about 1383.1877131791.

The spelling of 2646326144 in words is "two billion, six hundred forty-six million, three hundred twenty-six thousand, one hundred forty-four".