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18960041 = 144713103
BaseRepresentation
bin100100001010…
…0111010101001
31022200021021202
41020110322221
514323210131
61514213545
7320105042
oct110247251
938607252
1018960041
11a77aa61
1264242b5
133c0ac79
1427378c9
1519e7bcb
hex1214ea9

18960041 has 4 divisors (see below), whose sum is σ = 18974592. Its totient is φ = 18945492.

The previous prime is 18960037. The next prime is 18960047. The reversal of 18960041 is 14006981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18960041 - 22 = 18960037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18959986 and 18960013.

It is not an unprimeable number, because it can be changed into a prime (18960047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5105 + ... + 7998.

It is an arithmetic number, because the mean of its divisors is an integer number (4743648).

Almost surely, 218960041 is an apocalyptic number.

It is an amenable number.

18960041 is a deficient number, since it is larger than the sum of its proper divisors (14551).

18960041 is a wasteful number, since it uses less digits than its factorization.

18960041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14550.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 18960041 is about 4354.3129193938. The cubic root of 18960041 is about 266.6529692617.

The spelling of 18960041 in words is "eighteen million, nine hundred sixty thousand, forty-one".

Divisors: 1 1447 13103 18960041