1620221014 has 12 divisors (see below), whose sum is σ = 2511261252. Its totient is φ = 783976980.

The previous prime is 1620221011. The next prime is 1620221027. The reversal of 1620221014 is 4101220261.

It is a super-2 number, since 2×1620221014² = 5250232268414376392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1620220982 and 1620221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 419572 + ... + 423415.

It is an arithmetic number, because the mean of its divisors is an integer number (209271771).

Almost surely, 2^1620221014 is an apocalyptic number.

1620221014 is a deficient number, since it is larger than the sum of its proper divisors (891040238).

1620221014 is an equidigital number, since it uses as much as digits as its factorization.

1620221014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843051 (or 843020 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1620221014 is about 40251.9690698480. The cubic root of 1620221014 is about 1174.5136998329.

Adding to 1620221014 its reverse (4101220261), we get a palindrome (5721441275).

The spelling of 1620221014 in words is "one billion, six hundred twenty million, two hundred twenty-one thousand, fourteen".