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18884496325 = 521744434109
BaseRepresentation
bin10001100101100110…
…101000101111000101
31210202002111210212211
4101211212220233011
5302133412340300
612401520143421
71235655366412
oct214546505705
953662453784
1018884496325
118010895662
1237b0467b71
131a1c5592a6
14cb20ad109
15757d714ba
hex4659a8bc5

18884496325 has 12 divisors (see below), whose sum is σ = 24794233380. Its totient is φ = 14218914560.

The previous prime is 18884496289. The next prime is 18884496373. The reversal of 18884496325 is 52369448881.

It can be written as a sum of positive squares in 6 ways, for example, as 1133197569 + 17751298756 = 33663^2 + 133234^2 .

It is not a de Polignac number, because 18884496325 - 215 = 18884463557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18884496325.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22216630 + ... + 22217479.

It is an arithmetic number, because the mean of its divisors is an integer number (2066186115).

Almost surely, 218884496325 is an apocalyptic number.

It is an amenable number.

18884496325 is a deficient number, since it is larger than the sum of its proper divisors (5909737055).

18884496325 is a wasteful number, since it uses less digits than its factorization.

18884496325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44434136 (or 44434131 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 58.

The spelling of 18884496325 in words is "eighteen billion, eight hundred eighty-four million, four hundred ninety-six thousand, three hundred twenty-five".

Divisors: 1 5 17 25 85 425 44434109 222170545 755379853 1110852725 3776899265 18884496325