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18079049 = 43433971
BaseRepresentation
bin100010011110…
…1110101001001
31021000111210102
41010331311021
514112012144
61443255145
7306445412
oct104756511
937014712
1018079049
11a22906a
12607a4b5
13398cc81
142588809
1518c1b4e
hex113dd49

18079049 has 8 divisors (see below), whose sum is σ = 18561312. Its totient is φ = 17599680.

The previous prime is 18079043. The next prime is 18079057. The reversal of 18079049 is 94097081.

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 18079049 - 220 = 17030473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18079043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18134 + ... + 19104.

It is an arithmetic number, because the mean of its divisors is an integer number (2320164).

Almost surely, 218079049 is an apocalyptic number.

It is an amenable number.

18079049 is a deficient number, since it is larger than the sum of its proper divisors (482263).

18079049 is an equidigital number, since it uses as much as digits as its factorization.

18079049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 18079049 is about 4251.9464954301. The cubic root of 18079049 is about 262.4572217516.

The spelling of 18079049 in words is "eighteen million, seventy-nine thousand, forty-nine".

Divisors: 1 43 433 971 18619 41753 420443 18079049