2645745384 has 128 divisors (see below), whose sum is σ = 7129140480. Its totient is φ = 816076800.

The previous prime is 2645745373. The next prime is 2645745391. The reversal of 2645745384 is 4835475462.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5738914 + ... + 5739374.

It is an arithmetic number, because the mean of its divisors is an integer number (55696410).

Almost surely, 2^2645745384 is an apocalyptic number.

2645745384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645745384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3564570240).

2645745384 is an abundant number, since it is smaller than the sum of its proper divisors (4483395096).

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

2645745384 is a wasteful number, since it uses less digits than its factorization.

2645745384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 807 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 48.

The square root of 2645745384 is about 51436.8096211264. The cubic root of 2645745384 is about 1383.0865214610.

The spelling of 2645745384 in words is "two billion, six hundred forty-five million, seven hundred forty-five thousand, three hundred eighty-four".