1622856879396 has 189 divisors, whose sum is σ = 4405628039169. Its totient is φ = 522814305600.

The previous prime is 1622856879349. The next prime is 1622856879433. The reversal of 1622856879396 is 6939786582261.

It is a happy number.

The square root of 1622856879396 is 1273914.

It is a perfect power (a square), and thus also a powerful number.

1622856879396 is a `hidden beast` number, since 1 + 6 + 2 + 28 + 568 + 7 + 9 + 39 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4262261796 + 1618594617600 = 65286^2 + 1272240^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 2132531656 + ... + 2132532416.

Almost surely, 2^{1622856879396} is an apocalyptic number.

1622856879396 is the 1273914-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1622856879396

1622856879396 is an abundant number, since it is smaller than the sum of its proper divisors (2782771159773).

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

1622856879396 is an frugal number, since it uses more digits than its factorization.

1622856879396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 797 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 72.

The spelling of 1622856879396 in words is "one trillion, six hundred twenty-two billion, eight hundred fifty-six million, eight hundred seventy-nine thousand, three hundred ninety-six".