1628695809673 has 8 divisors (see below), whose sum is σ = 1638510769728. Its totient is φ = 1618881591504.

The previous prime is 1628695809667. The next prime is 1628695809703. The reversal of 1628695809673 is 3769085968261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1628695809673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1628695879673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4587190 + ... + 4929472.

It is an arithmetic number, because the mean of its divisors is an integer number (204813846216).

Almost surely, 2^{1628695809673} is an apocalyptic number.

It is an amenable number.

1628695809673 is a deficient number, since it is larger than the sum of its proper divisors (9814960055).

1628695809673 is a wasteful number, since it uses less digits than its factorization.

1628695809673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370943.

The product of its (nonzero) digits is 235146240, while the sum is 70.

The spelling of 1628695809673 in words is "one trillion, six hundred twenty-eight billion, six hundred ninety-five million, eight hundred nine thousand, six hundred seventy-three".