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18885868214 = 210986632423
BaseRepresentation
bin10001100101101011…
…110111101010110110
31210202012002111202112
4101211223313222312
5302134240240324
612402005411022
71236003142163
oct214553675266
953665074675
1018885868214
118011642354
1237b0a09a72
131a1c919865
14cb234906a
15758042c0e
hex465af7ab6

18885868214 has 8 divisors (see below), whose sum is σ = 28588699920. Its totient is φ = 9356301576.

The previous prime is 18885868193. The next prime is 18885868231. The reversal of 18885868214 is 41286858881.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43315994 + ... + 43316429.

It is an arithmetic number, because the mean of its divisors is an integer number (3573587490).

Almost surely, 218885868214 is an apocalyptic number.

18885868214 is a deficient number, since it is larger than the sum of its proper divisors (9702831706).

18885868214 is a wasteful number, since it uses less digits than its factorization.

18885868214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86632534.

The product of its digits is 7864320, while the sum is 59.

The spelling of 18885868214 in words is "eighteen billion, eight hundred eighty-five million, eight hundred sixty-eight thousand, two hundred fourteen".

Divisors: 1 2 109 218 86632423 173264846 9442934107 18885868214