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1680602836 = 221138195519
BaseRepresentation
bin110010000101011…
…1111011011010100
311100010100110200111
41210022333123110
511420213242321
6434433052404
756434613503
oct14412773324
94303313614
101680602836
11792724870
123aa9b7104
1320a247663
1411d2b683a
159c8215e1
hex642bf6d4

1680602836 has 12 divisors (see below), whose sum is σ = 3208423680. Its totient is φ = 763910360.

The previous prime is 1680602827. The next prime is 1680602837. The reversal of 1680602836 is 6382060861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680602837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19097716 + ... + 19097803.

It is an arithmetic number, because the mean of its divisors is an integer number (267368640).

Almost surely, 21680602836 is an apocalyptic number.

It is an amenable number.

1680602836 is a deficient number, since it is larger than the sum of its proper divisors (1527820844).

1680602836 is a wasteful number, since it uses less digits than its factorization.

1680602836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38195534 (or 38195532 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1680602836 is about 40995.1562504645. The cubic root of 1680602836 is about 1188.9265644269.

The spelling of 1680602836 in words is "one billion, six hundred eighty million, six hundred two thousand, eight hundred thirty-six".

Divisors: 1 2 4 11 22 44 38195519 76391038 152782076 420150709 840301418 1680602836