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18750199375 = 5430000319
BaseRepresentation
bin10001011101100110…
…010101011001001111
31210101201210211002201
4101131212111121033
5301400022340000
612340321502331
71232435031205
oct213546253117
953351724081
1018750199375
117a51aa9346
1237734a19a7
1319ca797a3b
14c9c311075
1574b19496a
hex45d99564f

18750199375 has 10 divisors (see below), whose sum is σ = 23430249920. Its totient is φ = 15000159000.

The previous prime is 18750199339. The next prime is 18750199379. The reversal of 18750199375 is 57399105781.

It is not a de Polignac number, because 18750199375 - 221 = 18748102223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18750199379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14999535 + ... + 15000784.

It is an arithmetic number, because the mean of its divisors is an integer number (2343024992).

Almost surely, 218750199375 is an apocalyptic number.

18750199375 is a deficient number, since it is larger than the sum of its proper divisors (4680050545).

18750199375 is an frugal number, since it uses more digits than its factorization.

18750199375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000339 (or 30000324 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 55.

The spelling of 18750199375 in words is "eighteen billion, seven hundred fifty million, one hundred ninety-nine thousand, three hundred seventy-five".

Divisors: 1 5 25 125 625 30000319 150001595 750007975 3750039875 18750199375