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18948882842 = 243220335847
BaseRepresentation
bin10001101001011100…
…010000000110011010
31210220120122222120122
4101221130100012122
5302301403222332
612412140153242
71240366563251
oct215134200632
953816588518
1018948882842
11804417215a
123809b38822
131a2c9b0a16
14cba86d798
1575d83dc12
hex46971019a

18948882842 has 8 divisors (see below), whose sum is σ = 29084331936. Its totient is φ = 9254105532.

The previous prime is 18948882829. The next prime is 18948882847. The reversal of 18948882842 is 24828884981.

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

It is not an unprimeable number, because it can be changed into a prime (18948882847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110167838 + ... + 110168009.

It is an arithmetic number, because the mean of its divisors is an integer number (3635541492).

Almost surely, 218948882842 is an apocalyptic number.

18948882842 is a deficient number, since it is larger than the sum of its proper divisors (10135449094).

18948882842 is a wasteful number, since it uses less digits than its factorization.

18948882842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220335892.

The product of its digits is 18874368, while the sum is 62.

The spelling of 18948882842 in words is "eighteen billion, nine hundred forty-eight million, eight hundred eighty-two thousand, eight hundred forty-two".

Divisors: 1 2 43 86 220335847 440671694 9474441421 18948882842