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16349890887 = 3211198692127
BaseRepresentation
bin11110011101000011…
…11000100101000111
31120012110012111212100
433032201320211013
5231441033002022
611302214523143
71116110531241
oct171641704507
946173174770
1016349890887
116a300a6020
1232036664b3
131707401865
14b11611091
1565a5ac1ac
hex3ce878947

16349890887 has 24 divisors (see below), whose sum is σ = 27119439360. Its totient is φ = 9387496080.

The previous prime is 16349890867. The next prime is 16349890897. The reversal of 16349890887 is 78809894361.

16349890887 is a `hidden beast` number, since 1 + 63 + 498 + 9 + 0 + 8 + 87 = 666.

It is not a de Polignac number, because 16349890887 - 28 = 16349890631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16349890847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4344183 + ... + 4347944.

It is an arithmetic number, because the mean of its divisors is an integer number (1129976640).

Almost surely, 216349890887 is an apocalyptic number.

16349890887 is a deficient number, since it is larger than the sum of its proper divisors (10769548473).

16349890887 is a wasteful number, since it uses less digits than its factorization.

16349890887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8692163 (or 8692160 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 16349890887 in words is "sixteen billion, three hundred forty-nine million, eight hundred ninety thousand, eight hundred eighty-seven".

Divisors: 1 3 9 11 19 33 57 99 171 209 627 1881 8692127 26076381 78229143 95613397 165150413 286840191 495451239 860520573 1486353717 1816654543 5449963629 16349890887