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180742386830 = 2526368723341
BaseRepresentation
bin1010100001010100010…
…1011111010010001110
3122021112020200120112012
42220111011133102032
510430130022334310
6215010520341222
716025651640125
oct2502505372216
9567466616465
10180742386830
116a71a402415
122b042314812
13140756a49b5
148a68648abc
154a7c99ec05
hex2a1515f48e

180742386830 has 16 divisors (see below), whose sum is σ = 326573321184. Its totient is φ = 72022060320.

The previous prime is 180742386823. The next prime is 180742386907. The reversal of 180742386830 is 38683247081.

It is a super-4 number, since 4×1807423868304 (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34359041 + ... + 34364300.

It is an arithmetic number, because the mean of its divisors is an integer number (20410832574).

Almost surely, 2180742386830 is an apocalyptic number.

180742386830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180742386830 is a deficient number, since it is larger than the sum of its proper divisors (145830934354).

180742386830 is a wasteful number, since it uses less digits than its factorization.

180742386830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68723611.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 180742386830 in words is "one hundred eighty billion, seven hundred forty-two million, three hundred eighty-six thousand, eight hundred thirty".

Divisors: 1 2 5 10 263 526 1315 2630 68723341 137446682 343616705 687233410 18074238683 36148477366 90371193415 180742386830