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18959485 = 57153407
BaseRepresentation
bin100100001010…
…0110001111101
31022200020112011
41020110301331
514323200420
61514211221
7320103316
oct110246175
938606464
1018959485
11a77a5a6
126423b11
133c0a93c
14273760d
1519e795a
hex1214c7d

18959485 has 8 divisors (see below), whose sum is σ = 23072256. Its totient is φ = 14953680.

The previous prime is 18959483. The next prime is 18959491. The reversal of 18959485 is 58495981.

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

It is not a de Polignac number, because 18959485 - 21 = 18959483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18959483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26349 + ... + 27058.

It is an arithmetic number, because the mean of its divisors is an integer number (2884032).

Almost surely, 218959485 is an apocalyptic number.

It is an amenable number.

18959485 is a deficient number, since it is larger than the sum of its proper divisors (4112771).

18959485 is an equidigital number, since it uses as much as digits as its factorization.

18959485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53483.

The product of its digits is 518400, while the sum is 49.

The square root of 18959485 is about 4354.2490741803. The cubic root of 18959485 is about 266.6503627185.

The spelling of 18959485 in words is "eighteen million, nine hundred fifty-nine thousand, four hundred eighty-five".

Divisors: 1 5 71 355 53407 267035 3791897 18959485