1622128653 has 32 divisors (see below), whose sum is σ = 2488769280. Its totient is φ = 1043565120.

The previous prime is 1622128643. The next prime is 1622128657. The reversal of 1622128653 is 3568212261.

1622128653 is a `hidden beast` number, since 1 + 622 + 1 + 28 + 6 + 5 + 3 = 666.

It is not a de Polignac number, because 1622128653 - 2⁴ = 1622128637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622128657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78000 + ... + 96582.

It is an arithmetic number, because the mean of its divisors is an integer number (77774040).

Almost surely, 2^1622128653 is an apocalyptic number.

It is an amenable number.

1622128653 is a deficient number, since it is larger than the sum of its proper divisors (866640627).

1622128653 is a wasteful number, since it uses less digits than its factorization.

1622128653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18706 (or 18700 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1622128653 is about 40275.6583186420. The cubic root of 1622128653 is about 1174.9744742908.

The spelling of 1622128653 in words is "one billion, six hundred twenty-two million, one hundred twenty-eight thousand, six hundred fifty-three".