1628843650 has 48 divisors (see below), whose sum is σ = 3470670720. Its totient is φ = 557136000.

The previous prime is 1628843611. The next prime is 1628843659. The reversal of 1628843650 is 563488261.

It is a super-2 number, since 2×1628843650² = 5306263272290645000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1628843597 and 1628843606.

It is not an unprimeable number, because it can be changed into a prime (1628843659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148350 + ... + 158950.

It is an arithmetic number, because the mean of its divisors is an integer number (72305640).

Almost surely, 2^1628843650 is an apocalyptic number.

1628843650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1628843650 is an abundant number, since it is smaller than the sum of its proper divisors (1841827070).

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

1628843650 is a wasteful number, since it uses less digits than its factorization.

1628843650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11059 (or 11054 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 1628843650 is about 40358.9351940806. The cubic root of 1628843650 is about 1176.5935583447.

The spelling of 1628843650 in words is "one billion, six hundred twenty-eight million, eight hundred forty-three thousand, six hundred fifty".