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819707941 = 13199931543
BaseRepresentation
bin110000110110111…
…100000000100101
32010010102110220101
4300312330000211
53134321123231
6213201104101
726212255033
oct6066740045
92103373811
10819707941
11390781788
121aa628031
13100a933b0
147ac19553
154be6b661
hex30dbc025

819707941 has 8 divisors (see below), whose sum is σ = 883232000. Its totient is φ = 756250992.

The previous prime is 819707897. The next prime is 819707947. The reversal of 819707941 is 149707918.

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 819707941 - 29 = 819707429 is a prime.

It is a super-2 number, since 2×8197079412 = 1343842217076918962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 819707891 and 819707900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819707947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10216 + ... + 41758.

It is an arithmetic number, because the mean of its divisors is an integer number (110404000).

Almost surely, 2819707941 is an apocalyptic number.

It is an amenable number.

819707941 is a deficient number, since it is larger than the sum of its proper divisors (63524059).

819707941 is a wasteful number, since it uses less digits than its factorization.

819707941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33555.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 819707941 is about 28630.5421010501. The cubic root of 819707941 is about 935.8790253987.

The spelling of 819707941 in words is "eight hundred nineteen million, seven hundred seven thousand, nine hundred forty-one".

Divisors: 1 13 1999 25987 31543 410059 63054457 819707941