1628861696 has 72 divisors (see below), whose sum is σ = 4053693504. Its totient is φ = 634613760.

The previous prime is 1628861669. The next prime is 1628861701. The reversal of 1628861696 is 6961688261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21605 + ... + 61028.

Almost surely, 2^1628861696 is an apocalyptic number.

1628861696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1628861696 is an abundant number, since it is smaller than the sum of its proper divisors (2424831808).

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

1628861696 is an equidigital number, since it uses as much as digits as its factorization.

1628861696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82667 (or 82653 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 1628861696 is about 40359.1587622933. The cubic root of 1628861696 is about 1176.5979034986.

The spelling of 1628861696 in words is "one billion, six hundred twenty-eight million, eight hundred sixty-one thousand, six hundred ninety-six".