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18872004892 = 2213253526739
BaseRepresentation
bin10001100100110110…
…111111000100011100
31210201020000011212011
4101210312333010130
5302122213124032
612400352321004
71235444252266
oct214466770434
953636004764
1018872004892
118004833664
1237a8243164
131a19aa4700
14cb057ab36
15756c05247
hex464dbf11c

18872004892 has 36 divisors (see below), whose sum is σ = 36436712760. Its totient is φ = 8545797312.

The previous prime is 18872004829. The next prime is 18872004901. The reversal of 18872004892 is 29840027881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227542 + ... + 299197.

It is an arithmetic number, because the mean of its divisors is an integer number (1012130910).

Almost surely, 218872004892 is an apocalyptic number.

It is an amenable number.

18872004892 is a deficient number, since it is larger than the sum of its proper divisors (17564707868).

18872004892 is a wasteful number, since it uses less digits than its factorization.

18872004892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526822 (or 526807 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 18872004892 in words is "eighteen billion, eight hundred seventy-two million, four thousand, eight hundred ninety-two".

Divisors: 1 2 4 13 26 52 53 106 169 212 338 676 689 1378 2756 8957 17914 35828 526739 1053478 2106956 6847607 13695214 27390428 27917167 55834334 89018891 111668668 178037782 356075564 362923171 725846342 1451692684 4718001223 9436002446 18872004892