628921958116 has 9 divisors (see below), whose sum is σ = 1100616202371. Its totient is φ = 314460186012.

The previous prime is 628921958101. The next prime is 628921958183. The reversal of 628921958116 is 611859129826.

The square root of 628921958116 is 793046.

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

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 1387831 + ... + 1784353.

Almost surely, 2^628921958116 is an apocalyptic number.

628921958116 is the 793046-th square number.

It is an amenable number.

628921958116 is a deficient number, since it is larger than the sum of its proper divisors (471694244255).

628921958116 is an frugal number, since it uses more digits than its factorization.

628921958116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793050 (or 396525 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 58.

The spelling of 628921958116 in words is "six hundred twenty-eight billion, nine hundred twenty-one million, nine hundred fifty-eight thousand, one hundred sixteen".