2154323244 has 24 divisors (see below), whose sum is σ = 5245309440. Its totient is φ = 686885584.

The previous prime is 2154323243. The next prime is 2154323329. The reversal of 2154323244 is 4423234512.

It is a super-2 number, since 2×2154323244² = 9282217279277367072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154323243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3902484 + ... + 3903035.

It is an arithmetic number, because the mean of its divisors is an integer number (218554560).

Almost surely, 2^2154323244 is an apocalyptic number.

It is an amenable number.

2154323244 is an abundant number, since it is smaller than the sum of its proper divisors (3090986196).

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

2154323244 is a wasteful number, since it uses less digits than its factorization.

2154323244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805549 (or 7805547 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 2154323244 is about 46414.6878046163. The cubic root of 2154323244 is about 1291.5273945839.

Adding to 2154323244 its reverse (4423234512), we get a palindrome (6577557756).

The spelling of 2154323244 in words is "two billion, one hundred fifty-four million, three hundred twenty-three thousand, two hundred forty-four".