2153771450 has 24 divisors (see below), whose sum is σ = 4026368412. Its totient is φ = 857131520.

The previous prime is 2153771419. The next prime is 2153771471. The reversal of 2153771450 is 541773512.

It can be written as a sum of positive squares in 6 ways, for example, as 1501020049 + 652751401 = 38743^2 + 25549^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2153771450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99479 + ... + 119178.

Almost surely, 2^2153771450 is an apocalyptic number.

2153771450 is a deficient number, since it is larger than the sum of its proper divisors (1872596962).

2153771450 is a wasteful number, since it uses less digits than its factorization.

2153771450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218866 (or 218861 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 2153771450 is about 46408.7432495214. The cubic root of 2153771450 is about 1291.4171174280.

The spelling of 2153771450 in words is "two billion, one hundred fifty-three million, seven hundred seventy-one thousand, four hundred fifty".