1628442850 has 12 divisors (see below), whose sum is σ = 3028903794. Its totient is φ = 651377120.

The previous prime is 1628442841. The next prime is 1628442913. The reversal of 1628442850 is 582448261.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 884408121 + 744034729 = 29739^2 + 27277^2 .

It is a super-2 number, since 2×1628442850² = 5303652231432245000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16284379 + ... + 16284478.

Almost surely, 2^1628442850 is an apocalyptic number.

1628442850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1628442850 is a deficient number, since it is larger than the sum of its proper divisors (1400460944).

1628442850 is a wasteful number, since it uses less digits than its factorization.

1628442850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32568869 (or 32568864 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 1628442850 is about 40353.9694453966. The cubic root of 1628442850 is about 1176.4970446036.

The spelling of 1628442850 in words is "one billion, six hundred twenty-eight million, four hundred forty-two thousand, eight hundred fifty".