Base | Representation |
---|---|
bin | 10010111101101010… |
… | …01101101011110101 |
3 | 222021112020110200110 |
4 | 21132311031223311 |
5 | 131322310130311 |
6 | 4402124533233 |
7 | 510202404225 |
oct | 113665155365 |
9 | 28245213613 |
10 | 10180942581 |
11 | 4354970937 |
12 | 1b816b1219 |
13 | c633313a4 |
14 | 6c81c4085 |
15 | 3e8c008a6 |
hex | 25ed4daf5 |
10180942581 has 8 divisors (see below), whose sum is σ = 13694719680. Its totient is φ = 6727230272.
The previous prime is 10180942559. The next prime is 10180942619. The reversal of 10180942581 is 18524908101.
10180942581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 10180942581 - 215 = 10180909813 is a prime.
It is a super-2 number, since 2×101809425812 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10180942081) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15015801 + ... + 15016478.
It is an arithmetic number, because the mean of its divisors is an integer number (1711839960).
Almost surely, 210180942581 is an apocalyptic number.
It is an amenable number.
10180942581 is a deficient number, since it is larger than the sum of its proper divisors (3513777099).
10180942581 is a wasteful number, since it uses less digits than its factorization.
10180942581 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30032395.
The product of its (nonzero) digits is 23040, while the sum is 39.
The spelling of 10180942581 in words is "ten billion, one hundred eighty million, nine hundred forty-two thousand, five hundred eighty-one".
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