2151444424 has 8 divisors (see below), whose sum is σ = 4033958310. Its totient is φ = 1075722208.

The previous prime is 2151444419. The next prime is 2151444443. The reversal of 2151444424 is 4244441512.

It can be written as a sum of positive squares in only one way, i.e., 2090135524 + 61308900 = 45718^2 + 7830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134465269 + ... + 134465284.

Almost surely, 2^2151444424 is an apocalyptic number.

It is an amenable number.

2151444424 is a deficient number, since it is larger than the sum of its proper divisors (1882513886).

2151444424 is a wasteful number, since it uses less digits than its factorization.

2151444424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268930559 (or 268930555 counting only the distinct ones).

The product of its digits is 20480, while the sum is 31.

The square root of 2151444424 is about 46383.6654868931. The cubic root of 2151444424 is about 1290.9518492182.

Adding to 2151444424 its reverse (4244441512), we get a palindrome (6395885936).

The spelling of 2151444424 in words is "two billion, one hundred fifty-one million, four hundred forty-four thousand, four hundred twenty-four".