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19130641 = 234120287
BaseRepresentation
bin100100011111…
…0100100010001
31022222221022021
41020332210101
514344140031
61522011441
7321415315
oct110764421
938887267
1019130641
11a887152
1264a6b81
133c6a80a
14277db45
151a2d511
hex123e911

19130641 has 8 divisors (see below), whose sum is σ = 20450304. Its totient is φ = 17851680.

The previous prime is 19130623. The next prime is 19130647. The reversal of 19130641 is 14603191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19130641 - 215 = 19097873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19130647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9201 + ... + 11086.

It is an arithmetic number, because the mean of its divisors is an integer number (2556288).

Almost surely, 219130641 is an apocalyptic number.

It is an amenable number.

19130641 is a deficient number, since it is larger than the sum of its proper divisors (1319663).

19130641 is a wasteful number, since it uses less digits than its factorization.

19130641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20351.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 19130641 is about 4373.8588225959. The cubic root of 19130641 is about 267.4503520984.

The spelling of 19130641 in words is "nineteen million, one hundred thirty thousand, six hundred forty-one".

Divisors: 1 23 41 943 20287 466601 831767 19130641