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18841941 = 326731247
BaseRepresentation
bin100011111100…
…0000101010101
31022110021021200
41013320011111
514310420231
61511503113
7316103526
oct107700525
938407250
1018841941
11a6aa258
126387a99
133b992a1
14270684d
1519c2be6
hex11f8155

18841941 has 12 divisors (see below), whose sum is σ = 27623232. Its totient is φ = 12373416.

The previous prime is 18841937. The next prime is 18841961. The reversal of 18841941 is 14914881.

It is not a de Polignac number, because 18841941 - 22 = 18841937 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18841896 and 18841905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18841961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15021 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (2301936).

Almost surely, 218841941 is an apocalyptic number.

It is an amenable number.

18841941 is a deficient number, since it is larger than the sum of its proper divisors (8781291).

18841941 is a wasteful number, since it uses less digits than its factorization.

18841941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31320 (or 31317 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 18841941 is about 4340.7304684811. The cubic root of 18841941 is about 266.0981650989.

The spelling of 18841941 in words is "eighteen million, eight hundred forty-one thousand, nine hundred forty-one".

Divisors: 1 3 9 67 201 603 31247 93741 281223 2093549 6280647 18841941