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2831630389 = 71920721061
BaseRepresentation
bin1010100011000111…
…0100000000110101
321022100012201122121
42220301310000311
521244344133024
61144551355541
7130112314120
oct25061640065
97270181577
102831630389
111223421905
12670382bb1
13361853353
141cc0d93b7
151188d68e4
hexa8c74035

2831630389 has 8 divisors (see below), whose sum is σ = 3236471168. Its totient is φ = 2426870160.

The previous prime is 2831630377. The next prime is 2831630411. The reversal of 2831630389 is 9830361382.

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 2831630389 - 217 = 2831499317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2831630689) 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, 123919 + ... + 144979.

It is an arithmetic number, because the mean of its divisors is an integer number (404558896).

Almost surely, 22831630389 is an apocalyptic number.

It is an amenable number.

2831630389 is a deficient number, since it is larger than the sum of its proper divisors (404840779).

2831630389 is a wasteful number, since it uses less digits than its factorization.

2831630389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40275.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 2831630389 is about 53213.0659612844. The cubic root of 2831630389 is about 1414.7472383323.

The spelling of 2831630389 in words is "two billion, eight hundred thirty-one million, six hundred thirty thousand, three hundred eighty-nine".

Divisors: 1 7 19207 21061 134449 147427 404518627 2831630389