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18282187165 = 511728345641
BaseRepresentation
bin10001000001101101…
…000000100110011101
31202012010011100001011
4101001231000212131
5244420214442130
612222042415221
71215023012134
oct210155004635
952163140034
1018282187165
1178318aa8a0
123662801511
131954832638
14c560c491b
1572004952a
hex441b4099d

18282187165 has 16 divisors (see below), whose sum is σ = 23936855616. Its totient is φ = 13294019200.

The previous prime is 18282187129. The next prime is 18282187199. The reversal of 18282187165 is 56178128281.

It is a happy number.

It is not a de Polignac number, because 18282187165 - 27 = 18282187037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377745 + ... + 423385.

It is an arithmetic number, because the mean of its divisors is an integer number (1496053476).

Almost surely, 218282187165 is an apocalyptic number.

It is an amenable number.

18282187165 is a deficient number, since it is larger than the sum of its proper divisors (5654668451).

18282187165 is a wasteful number, since it uses less digits than its factorization.

18282187165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52940.

The product of its digits is 430080, while the sum is 49.

The spelling of 18282187165 in words is "eighteen billion, two hundred eighty-two million, one hundred eighty-seven thousand, one hundred sixty-five".

Divisors: 1 5 11 55 7283 36415 45641 80113 228205 400565 502051 2510255 332403403 1662017015 3656437433 18282187165