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18857050033 = 81148134831
BaseRepresentation
bin10001100011111101…
…111011111110110001
31210200011212101122111
4101203331323332301
5302104401100113
612355100005321
71235203165153
oct214375737661
953604771574
1018857050033
117aa7349878
1237a3230841
131a16969793
14cac5a6ad3
1575574e13d
hex463f7bfb1

18857050033 has 8 divisors (see below), whose sum is σ = 18888133376. Its totient is φ = 18825987600.

The previous prime is 18857050019. The next prime is 18857050039. The reversal of 18857050033 is 33005075881.

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 18857050033 - 29 = 18857049521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18857050039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3900928 + ... + 3905758.

It is an arithmetic number, because the mean of its divisors is an integer number (2361016672).

Almost surely, 218857050033 is an apocalyptic number.

It is an amenable number.

18857050033 is a deficient number, since it is larger than the sum of its proper divisors (31083343).

18857050033 is an equidigital number, since it uses as much as digits as its factorization.

18857050033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10455.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 18857050033 in words is "eighteen billion, eight hundred fifty-seven million, fifty thousand, thirty-three".

Divisors: 1 811 4813 4831 3903343 3917941 23251603 18857050033