2185253428 has 6 divisors (see below), whose sum is σ = 3824193506. Its totient is φ = 1092626712.

The previous prime is 2185253419. The next prime is 2185253431. The reversal of 2185253428 is 8243525812.

It can be written as a sum of positive squares in only one way, i.e., 1808971024 + 376282404 = 42532^2 + 19398^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273156675 + ... + 273156682.

Almost surely, 2^2185253428 is an apocalyptic number.

It is an amenable number.

2185253428 is a deficient number, since it is larger than the sum of its proper divisors (1638940078).

2185253428 is a wasteful number, since it uses less digits than its factorization.

2185253428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546313361 (or 546313359 counting only the distinct ones).

The product of its digits is 153600, while the sum is 40.

The square root of 2185253428 is about 46746.6943002390. The cubic root of 2185253428 is about 1297.6789804121.

The spelling of 2185253428 in words is "two billion, one hundred eighty-five million, two hundred fifty-three thousand, four hundred twenty-eight".