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2180964071 = 1113113139971
BaseRepresentation
bin1000000111111110…
…1101111011100111
312121222212110021002
42001333231323213
513431311322241
61000225343515
7105021613556
oct20177557347
95558773232
102180964071
11a1a108650
1250a497b9b
13289ac7cb0
14169923d9d
15cb70b89b
hex81fedee7

2180964071 has 32 divisors (see below), whose sum is σ = 2606204160. Its totient is φ = 1799078400.

The previous prime is 2180964067. The next prime is 2180964073. The reversal of 2180964071 is 1704690812.

It is a cyclic number.

It is not a de Polignac number, because 2180964071 - 22 = 2180964067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180964073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2245616 + ... + 2246586.

It is an arithmetic number, because the mean of its divisors is an integer number (81443880).

Almost surely, 22180964071 is an apocalyptic number.

2180964071 is a deficient number, since it is larger than the sum of its proper divisors (425240089).

2180964071 is a wasteful number, since it uses less digits than its factorization.

2180964071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 2180964071 is about 46700.7930446582. The cubic root of 2180964071 is about 1296.8293681537.

The spelling of 2180964071 in words is "two billion, one hundred eighty million, nine hundred sixty-four thousand, seventy-one".

Divisors: 1 11 13 113 139 143 971 1243 1469 1529 1807 10681 12623 15707 16159 19877 109723 134969 138853 172777 204191 1206953 1426399 1484659 1754597 2246101 15251497 15690389 19300567 167766467 198269461 2180964071