Base | Representation |
---|---|
bin | 11110101101110011… |
… | …10011011011101010 |
3 | 1120120020120001022021 |
4 | 33112321303123222 |
5 | 232233014111421 |
6 | 11324154015054 |
7 | 1122434623444 |
oct | 172671633352 |
9 | 46506501267 |
10 | 16490378986 |
11 | 6aa2430894 |
12 | 324271748a |
13 | 172a550103 |
14 | b26141494 |
15 | 667aad341 |
hex | 3d6e736ea |
16490378986 has 4 divisors (see below), whose sum is σ = 24735568482. Its totient is φ = 8245189492.
The previous prime is 16490378963. The next prime is 16490379067. The reversal of 16490378986 is 68987309461.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68987309461 = 7 ⋅9855329923.
It can be written as a sum of positive squares in only one way, i.e., 12148227961 + 4342151025 = 110219^2 + 65895^2 .
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4122594745 + ... + 4122594748.
Almost surely, 216490378986 is an apocalyptic number.
16490378986 is a deficient number, since it is larger than the sum of its proper divisors (8245189496).
16490378986 is an equidigital number, since it uses as much as digits as its factorization.
16490378986 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8245189495.
The product of its (nonzero) digits is 15676416, while the sum is 61.
The spelling of 16490378986 in words is "sixteen billion, four hundred ninety million, three hundred seventy-eight thousand, nine hundred eighty-six".
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