2154281344 has 64 divisors (see below), whose sum is σ = 4560146640. Its totient is φ = 1010221056.

The previous prime is 2154281329. The next prime is 2154281369. The reversal of 2154281344 is 4431824512.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 679507 + ... + 682669.

Almost surely, 2^2154281344 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 2154281344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2280073320).

2154281344 is an abundant number, since it is smaller than the sum of its proper divisors (2405865296).

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

2154281344 is a wasteful number, since it uses less digits than its factorization.

2154281344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507 (or 3495 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 2154281344 is about 46414.2364366796. The cubic root of 2154281344 is about 1291.5190214442.

The spelling of 2154281344 in words is "two billion, one hundred fifty-four million, two hundred eighty-one thousand, three hundred forty-four".