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18114969605 = 518120016541
BaseRepresentation
bin10000110111101111…
…001000000000000101
31201202110111210200012
4100313233020000011
5244044413011410
612153310400005
71210622462315
oct206757100005
951673453605
1018114969605
117756478867
123616800005
131928cb5935
14c3bbd7445
15710518605
hex437bc8005

18114969605 has 8 divisors (see below), whose sum is σ = 21858063864. Its totient is φ = 14411908800.

The previous prime is 18114969589. The next prime is 18114969617. The reversal of 18114969605 is 50696941181.

It can be written as a sum of positive squares in 4 ways, for example, as 232324 + 18114737281 = 482^2 + 134591^2 .

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

It is not a de Polignac number, because 18114969605 - 24 = 18114969589 is a prime.

It is a super-3 number, since 3×181149696053 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10007366 + ... + 10009175.

It is an arithmetic number, because the mean of its divisors is an integer number (2732257983).

Almost surely, 218114969605 is an apocalyptic number.

It is an amenable number.

18114969605 is a deficient number, since it is larger than the sum of its proper divisors (3743094259).

18114969605 is a wasteful number, since it uses less digits than its factorization.

18114969605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20016727.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 18114969605 in words is "eighteen billion, one hundred fourteen million, nine hundred sixty-nine thousand, six hundred five".

Divisors: 1 5 181 905 20016541 100082705 3622993921 18114969605