1628646853 has 8 divisors (see below), whose sum is σ = 1634359680. Its totient is φ = 1622943840.

The previous prime is 1628646847. The next prime is 1628646881. The reversal of 1628646853 is 3586468261.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1628646853 - 2¹⁷ = 1628515781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1628646797 and 1628646806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628646823) 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, 484926 + ... + 488272.

It is an arithmetic number, because the mean of its divisors is an integer number (204294960).

Almost surely, 2^1628646853 is an apocalyptic number.

It is an amenable number.

1628646853 is a deficient number, since it is larger than the sum of its proper divisors (5712827).

1628646853 is a wasteful number, since it uses less digits than its factorization.

1628646853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907.

The product of its digits is 1658880, while the sum is 49.

The square root of 1628646853 is about 40356.4970357934. The cubic root of 1628646853 is about 1176.5461710651.

The spelling of 1628646853 in words is "one billion, six hundred twenty-eight million, six hundred forty-six thousand, eight hundred fifty-three".