2145323344 has 40 divisors (see below), whose sum is σ = 4454536320. Its totient is φ = 998287488.

The previous prime is 2145323339. The next prime is 2145323351. The reversal of 2145323344 is 4433235412.

It is a happy number.

It is a super-2 number, since 2×2145323344² = 9204824500622684672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65164 + ... + 92395.

It is an arithmetic number, because the mean of its divisors is an integer number (111363408).

Almost surely, 2^2145323344 is an apocalyptic number.

It is an amenable number.

2145323344 is an abundant number, since it is smaller than the sum of its proper divisors (2309212976).

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

2145323344 is a wasteful number, since it uses less digits than its factorization.

2145323344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157627 (or 157621 counting only the distinct ones).

The product of its digits is 34560, while the sum is 31.

The square root of 2145323344 is about 46317.6353455139. The cubic root of 2145323344 is about 1289.7263895002.

Adding to 2145323344 its reverse (4433235412), we get a palindrome (6578558756).

The spelling of 2145323344 in words is "two billion, one hundred forty-five million, three hundred twenty-three thousand, three hundred forty-four".