Search a number
-
+
18136041 = 371178511
BaseRepresentation
bin100010100101…
…1101111101001
31021010101222020
41011023233221
514120323131
61444415053
7310103520
oct105135751
937111866
1018136041
11a267970
1260a7489
1339acbb1
1425a14b7
1518d3996
hex114bbe9

18136041 has 16 divisors (see below), whose sum is σ = 30148608. Its totient is φ = 9421200.

The previous prime is 18136007. The next prime is 18136043. The reversal of 18136041 is 14063181.

It is not a de Polignac number, because 18136041 - 211 = 18133993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18136043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39025 + ... + 39486.

It is an arithmetic number, because the mean of its divisors is an integer number (1884288).

Almost surely, 218136041 is an apocalyptic number.

18136041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18136041 is a deficient number, since it is larger than the sum of its proper divisors (12012567).

18136041 is a wasteful number, since it uses less digits than its factorization.

18136041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78532.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18136041 is about 4258.6430937565. The cubic root of 18136041 is about 262.7327206036.

The spelling of 18136041 in words is "eighteen million, one hundred thirty-six thousand, forty-one".

Divisors: 1 3 7 11 21 33 77 231 78511 235533 549577 863621 1648731 2590863 6045347 18136041